A lot of bp's don't do well in a nice big roomy cage, even with appropriate hides they will still stress out from the openness of the cage and quite feeding. If it fits in a 10gal right now, there is a very good chance that moving it into a cage large enough to suit it for life as an adult will negatively affect your animal. I think every breeder I know, myself included, at some point in time has had to move a bp back down in cage/tub size to a tub that it should have outgrown to get it feeding again, even when just stepping it up to a tub size that would still be appropriate and not into one oversized for it like you're considering doing.