Is this a good trade for me?

I wouldn't do it especially since you need REB. Also Marion and AK47 will give a lot of points, they just need to warm up. K- Durant is doing as great. Rudy Gay is doin great. Nick Collison is doing okay. Also those three players only give u points besides REB and STL and ists once in a while. AK47 and shawn marion will give you PTS, REB, and BLKs. So I wouldn't do it.