N2, Sometimes there are trade-offs, and if I got it shooting real good the way it is even if its a couple pounds light I'd leave it..There's plenty of straight wood to get the poundage you want from. You may get your poundage by piking that bow, but may lose some smoothness of draw, and cast as well.
I'd be shooting for a great tiller, small tips, and a fast string to gain in cast what I might not get in poundage..remember a really fast 45# beats an average 55# bow..
Thats a great looking bow you got going there, and I'd be shooting it a bunch before piking it. It's osage so you can easily play with the shape using heat as well..
Keep a close eye on the snakey limb, and make sure its bending between the roller coasters..I'm sure this bow is a big step so don't feel like you have to finish it soon..
Rich