I like your idea using 2 coarses of concrete blocks and framing up from there. One suggestion I would make is to rod and fill all the blocks with rebar and concrete in addition to your required anchor bolts before framing. In the past, I've always done it (rod and filled) on the most important wall (in my mind) but in every case it would've been a better had I filled them all.

John

~ J Lucas
2006 GMC Envoy 4.2 I6
2023 Ram 2500/Cumins 6.7 I6
2010 Jeep Grand Cherokee (Wife’s)
2002 Silverado 2500 Gas 6.0
1941 Chevy 1/2-Ton
1942 Chevy 1.5-Ton SWB
In the Gallery
My Flicker Photos!