Finish Cost "Ballpark"

cebeling

I am looking at a foreclosed home that has been dryed in. Windows, doors, roof, sof/facia, tyvek. No siding, insulation, drywall, etc. It appears all rough-in electrical, plumbing and HVAC ductwork is complete but I don't know with certainty if inspection is complete. The home is a 1.5 story, mid to higher end in North Dakota.

At this point we are running rough numbers to see if it's in the budget, perhaps some DIY Equity to get us there. Can anyone advise with a rough/ballpark cost to finish a dryed in house?

There are many vaulted areas without traditional attic above, but engineered I-beams were used so there is 8-10" of room to work with. Recommendations on the "best" way to insulate this type of house?

Thanks!