At the moment you clearly get the better part of the deal with Bynum and Richardson playing under their level, but I think Bynum can get back to the level where he was last year. Richardson's situation in PHX is not good for fantasy. So yeah, I think you made a good deal.
Well I'm a Lakers fan, and I expect that Bynum's numbers will rise to the level where they were last year, but definitely not higher than that. 13ppg-10rpg-2.5bpg, that's what you can expect from him by the end of the season imo.