Great post marnett, looks like you really have done your research!
I will give my experience as I have a 3223D myself and use it for the same reasons you are looking to use yours.
I will address your concerns first then maybe give you some more things to think about :biggrin:
1st off, I love my Ventrac and use it for everything!
Plowing 6-10": This has not been a problem for me. I also live close to the factory and should be plowing the same type of snow you will be plowing. In reality I pile it up and am plowing a lot more than that most of the time. The only time I have ever experienced any issue was with traction. There had been an icy rain the day before and made a very solid layer of ice underneath, then it snowed about 6" of fairly heavy snow. It plowed the 6" great, but when I had plowed a few rows and was plowing more like 20-24", the tires wanted to slip a little bit. Solved that by having a little momentum going into the pile. Adding some extra weight over the front axle would also help as that is where it has the least amount of weight. Their isn't any option from the factory if you would like to add weight to the front. I would try it first, then if you ever do have a problem, you could buy some suitcase weights and maybe hang them on the front fender or weld a bar for them? Just a thought, but the Knobby tires are a must for snow removal and should be all you need!
A note on the pushing: I have a 60" blade. I doubt I would have slipped with the 48" or V-Blade, but the 3000 can easily handle the 60" blade. You may be able to contact Ventrac and see if they have any better videos for the 3000 series? I imagine primary focus for the states is on the 4000 series and winter shots can be hard to plan for.
Ground Clearance: I mow some large hills (25 degrees) with some fairly large holes that have never caught that center joint (Or the belly bar as I like to call it) The only time I had an issue, was when I made a large pile of snow, plowed another pile up and over it and went a bit too far. I went over the top of the mound with the middle of the tractor and got hung up a little. Took me about 30 seconds to dig a little bit of snow with my glove to allow the weight to get put back on the tires. Only time I could see it being any issue is if you would maybe have a really wooded property where you might be going over tree roots or stumps? But the way it articulates and oscillates in the center, you should be able to get yourself off of most anything. l have a ledge off of my one concrete pad that is roughly 4". If I go straight off, it can catch that center pivot, but I never come close to it if I go off at an angle.
Slip Scoop: I have the 48" slip scoop. It does fantastic when moving mulch, pea gravel, dirt, etc. Never had an issue especially if you use the weight transfer (Any questions on this make sure you get your dealer to explain it to you or let me know!)
Tested both the broom and snow blower: Both great attachments. I have a mostly gravel driveway so I would not be getting the broom in my case. When I build or purchase a new place, or pave my driveway, I would love the broom! The plow is great for your really large snowfalls, but the broom would probably work for 95% of Ohio's snowfalls (0-5"?). It cleans right down to the pavement and does a wonderful job of it. I could probably cut my plowing time down by 50% much of the time by just zipping out there and cleaning down to the bare concrete if I had a paved drive and the broom, no need for salt then either. The time I would want the blower is if we constantly got nailed by a few large snowstorms. Then pushing it off to the side with a blade or broom would eventually wall the edge of your driveway off and you wouldn't have anywhere to really put your snow. But that rarely ever happens around here and if it does, I just push a little harder with the plow and make room :laughing:
Reliability: I am at around 300hrs give or take 25hrs :biggrin: Things done: General maintenance and oil changes when instructed by the manual as well as greasing all of the joints. I have had zero issues. Ventrac's are built like tanks and work flawlessly if you maintain them properly, I know what a shocker, maintain your stuff and it usually works right?
Take a tour of their plant and talk to some of them at the plant if you have any doubts, I am a proud Ventrac owner and they are very proud of their products and always seem to be making them better! If you line it up on a day that we should be getting snow I bet you could try out the blower and broom yourself :biggrin: Oh, and cold weather starting has never been a problem. Always starts great!
Maneuverability and Visibility: Huge reason I love this tractor is the visibility. I like sitting up front for mowing and plowing. Couldn't get any easier!
It sounds like the 3223D would work great for your situation (I have about 1.25 acres). The 4000 series is an awesome tractor, but was a bit of overkill in my situation. I believe the 3000 series was built for the European market as they are accustomed to the out front, articulating style of tractors. It is a bit sad that not many dealers tend to embrace its form factor, but it's partially because the consumers aren't used to that style either. So if you are having any doubt at all about the quality, reliability, or history of the 3000 series, call the factory or when you tour it ask those questions and they can tell you the testing that they have put on them and the amount that have gone overseas.
As far as your attachments/accessories:
60" mower - :thumbsup:
48" slip scoop - :thumbsup:
either a 60" blade or the V-blade for snow - V-blade is nice for "scooping" the snow. You get more control, but I think the 60" would work great for your situation. Depending on the type of material your driveway is made of you may want to think about a hardened edge, or a polyurethane edge for the blade.
possibly a blower or rotary broom unit - My vote is on the broom, although I would love a use for the blower, but those times would be too few and far between around here :laughing:
ROPS/knobby tires: Unless you have really large hills, I don't think the ROPS is necessary, but for safety, of course it is never a bad option. Knobby tires are a must if you are doing snow! (I started with turf tires, they worked, but the knobbies gave that extra traction I needed)
Hope this helps, sorry for the length, but if you have any more questions I can speak from my experience! Good luck!