Assuming UTG doesn't fold a lot more to a 3bet (so basically your call makes it 2 way otf unless other call hits very hard otf) I think calling a BTN raise with dead money in the post is defintiltey ok. (you may want to swap some of your calling range and raising range at a later date though from a balance point of view)

I'd bet the flop in all honest, not sure how i feel about Villains differnet lines (will update)