Those look really cool and, um, experienced.
Take one and cut about 40% of the back out of it, then more if you want it more open and less tightly bass-focused. I did mine in one cut and may have gone a bit too far when I compare it to my HT, but it's all copacetic. The more open 1x12 has a much more piercing tone, though that may be to the single-speaker issue as much as the amount of open back. Would be interested to hear folks' thoughts on that.
Wish we were playing this w/end, though we may be getting together on Sunday afternoon to jam/rehearse if you're interested in coming into DC to play a bit. we don't bite. (Well, actually, people have told us we bite, but they have mostly been folks not into our kind of music