I'm in the process of getting started on finishing my basement. I'm going to have approximately 900 sq ft. Foam on the walls, studded walls and unfaced fiberglass between the studs. About 18 inches of the basement wall is above grade outside, and that already has an inch of foam insulation on it. I'm in NW Ohio. I plan on heating the basement only when it's being used, and will probably be using some form of electric. I won't be heating the whole thing, as part of it will be a workout room, and both the wifey and I would prefer it cooler in that room. Still gonna insulate that part, but not install any heat in that room. What R-value would you go to? How much did you put in your basement, and was it enough?