Our custom house build (just finished the truss setting and roof sheathing) is coming in around $321/ft-although we are under running our cost to build at the moment. Septic, water and power were put for the shop I built about 4 years ago so that cost is not accounted for in the house cost.
Still waiting on final costs for kitchen cabinets and countertops- this area and interior doors and millwork seem to be running on the high end of first estimates.
You are about where we were 20 years ago. Our costs for 2000 sq. feet were $200 for the house, but adding water, septic, electrical and such brought it to $300. Finish & interior work including doors and kitchen raised it farther. And a nice tractor for the new place, of course...
Doors, windows, cabinets, and counters are the things that get everyday use. We wanted them to be something we enjoyed. By luck - just as we were framing - our builder found a complete set of inside and outside doors for a custom home that someone refused & we bought at a big discount.
By the time you add in landscaping and projects, we probably have in it about what it is worth on the market.
Things we wish we had done:
Made the chimney caps easier to get to for cleaning creosote. Maybe a catwalk?
Put in regular stairs to the attic instead of pull-downs.
Made a utility room the size of a bedroom instead of a closet.
Used something better than shingles for the roof. (since changed)
Expanded the barn
Things done well:
Wrap around deck and large overhangs.
Nice hardwood doors and velux windows.
Lots of varnished wood
Heated floor
Nice sturdy little barn
rScotty