http://www.thermaldesign.com/ for everyone...
So are you getting out of the Speaker trade all together or still keeping it going, while you work your way into the construction field or has that fizzled out?
I think there are a lot better designs out there using foam panels, spray foam, etc... JLC & FHB magazines have both had articles on this topic recently (within the last 3 months).
Oh & before I get accused of being to vague - it is a regional issue, even in the same state with the exact same method being used - performance varies, it all comes down to design, goals, etc... You may also want to check out building sciences website