Given our reads, these seem like the guys you want to play against when the flop hits, but not otherwise. Given that...

I wonder about the preflop raise. Is UB a 1/3 blind structure? If so, we're putting alot in with only a slim chance that the LPP BB is going to fold. It's worth completing since we can be fairly sure it won't get raised behind us and it should be a big hand if it hits.

Once the flop misses, I'm inclined to check-fold with one overcard + gutshot. If we check and are closing out the action, I might peel one off. I wouldn't call the river bet here.