Aaron, I think that whatever you do, you need to keep that straightbar level. It just doesn't look right angeled. The 20/24s look mighty enticing! I got a straightbar bike from Gotavan and it's a 24". Maybe that's what yours was? I'll try to get it out and take some pics for ya. It might help a little.
Do you hate handlbar decisions as much as I do? I think that's the tuffest part of getting a bike to come together. I usually have the darn things scattered all over and then start thinking .... what if I cut that part off and weld it to that? I've had some scary mutant looking stuff over the years! I've got my eyeballs glued to a pair of motorcycle bars from the local cycle gizmo seller. Only $20.00 and there mine!
Good luck and keep the pics coming!
Chainsaw