shureguy, I guess we are about as far apart as possible geographically.  For what it's worth:  My 1/3 acre is my front yard over a septic drain field.  Ten years ago it was very good grass, but I did not care for it properly and it slowly went downhill, dying completely out 2 yrs ago and is now moss, "swamp grass" (my name and would live with it if it filled in), and red sorrel weeds.  I got a soil lab report that the Ph is 4.9 and have doctored with lime. After trying for 2 years I finally got a landscape person to bid a new lawn. (angies list no help)
The first bid was $7000 which was twice my highest estimate.  The bid included weed kill, moss kill,  removing weeds, sand/soil mix and level, seeding with mulch, and fertilizing. Admittedly a lot of work and light equipment to avoid compacting the drain field.  I am rural so lots of transportation. Still I said no.  The contractor suggested elimination of the first step  (sand/soil), using my existing , somewhat rocky, soil.  The rebid was $4000.  He starts next week.  Maybe some of this helps.  I am a diy'r, but lack of equipment stopped me because acquisiton cost was at least the bid cost.