First trade. I'd rather have JVR than Couture regardless of position. If positions matter in that league, I'd MUCH rather have JVR because LWs are far more scarce than C's.
I also like Backstrom best among all three goalies mentioned. With Turco in Chicago on only a one-year contract, Crawford could become pretty valuable next season, but we don't know what he will do or the Hawks will do. Backstrom is a pretty solid sure thing.
I think you make out like a bandit with trade #1.