From your post it seems that you have already shortened the bottom limb so you may or may not have the room to lop off an inch more. Either way, if you are happy that it shoots good you may just want to keep shooting it as it is, as long as you believe the limb will not take any further set.
I tried to perfect a hickory bow that is similar in limb bending like your osage and in my pursuit of getting it just right I think I ruined it. Would want that to happen to what you been working on.
It is a pretty bow and you made it look very nice, all in all.