Any reason on doing spray foam? I had my house insulated a few years back with the cellulose insulation. They came in, took off one strip of siding, drilled a hole every foot or so and stuffed the shit out of it. Only cost me about $950 and the house is about 1500 sq ft (all upper levels though since it's a bi-level house). Guys got done in a day and my heating bill dropped HUGE. I haven't seen it over $80 in the coldest days in the past 3 years. Before that it was close to $200.