I am built a lot like you and have found the Sitka Flash 20 is very comfortable but it does not do well to pack anything out with. I generally cary 25 lbs +/- in it.
The Mystery Ranch Bighorn with small yoke/belt also fits me well and can handle much more weight.
They are both bigger than you are looking at.
SLM, this reminds me I need to order the small yoke/belt as well. E-mailed MR last Fall and they said call but of course I forgot.
BW, I also used a BL 2200 for a few years and then bought a MR bighorn about 6 years ago. Major upgrade but pack fit is obviously subjective. The MR doesn't fit me perfectly(6' 200lbs) but close enough for the few times a year I actually find the time to use it.
I'm far from a pack expert but you can adjust the pack for length and also choose between different belts. It might work for you and make a great pack for day hikes and or hauling out a boned out deer.
