I have a Dura Ace 7800 standard crank on my bike now (53/39) and want to swap to a compact crank because I do a lot of hill climbing and some of the really tough stuff is killing me in the lowest gear (25/11 rear sprocket).

I bought a new take off SRAM red crankset with no BB.

I'm guessing I can't re-use my hollowtech bottom bracket? Any suggestions on what bottom bracket is good and reasonably priced?

Anything I would need to worry about? Chain/Cassette/derailleurs/etc are all dura ace 7800 right now. I figure the chain will have to be shortened but that's about it.

I was going to look into a chain catcher too, any recommendations?