Well, start off with camber bolts, since they're cheap, and if they don't do the trick, you know someone on here will probably want them. But if you wanna just get the camber plates, get the camber plates.
If I'm wrong, someone correct me, but could you not use camber bolts, and plates, to get some serious camber?
Also, keep an eye out on my build thread today.. I've added a LOT of rear camber.. more than the fronts get with camber bolts. Although, there is a catch to it, so keep an eye out as I'll explain there