I've had my best luck sealing with shellac, you have to give them a couple coats though. When I use glue, I thin it with some water first. Never tried parafin, wonder if you could melt it in acetone and paint it on like that rather than keeping it warm?
I'd go ahead and get that sapwood off too, it'll help the wood dry faster and you'll see any knots so you'll know better what you have that way. And you could rough out at least one bow, it'd dry a lot faster when its near dimensions and you could play with it this winter.
Don't forget about billets, I see some potential straight billets in your "junk pile". And black locust will bend with heat, so you could probably straighten some of those bendy ones enough to use them. Don't know that you could straighten the ones with the golf club look though. My experience is, I hold onto everything for awhile and periodically cull out the junk when I become limited on space. But don't store anything with bark on it with your good stuff, that bark harbors lots of bug larvae and bugs LOVE black locust.
Black locust makes a good bow. How are your rings? Good ratio of summer to spring wood?