I purchased a B7800, FEL and 60MMM with grass catcher for roughly 18K in Virginia.
Two things I'd change from that purchase, first I'd get the 72" MMM, the 60" is just barely wider than the rear tires and secondly I'd get a Trac VAC or Cyclone Rake instead of the Kubota grass catcher.
I just finished paperwork today on a b7800 with fel,r4 tires,worklight,updated seat for 16200.00 out the door.The front end loader was high,the tractor was a deal.Now I'm debating on a finish mower-they want 1899.00 for a 5 ft bush hog fm.Hope that helps.I'm in the Charlotte NC area.