I would avoid the Dirtlogic 4.0"....big springs = less fine tuning the rate. They ride rough.
Id run Fox or Kings personally.
Yeah, sounds like you wouldnt have to do anything for the rear...that will certainly gain your attention though after the swap; your notice how stiff the rear is compared to the front very quickly
EDIT...ass, quit jumpin in infront of my posts! (and yeah, the Dirtlogics wont fit in the fulltraction brackets, from what ive seen)
And i dont know what im talking about...i just make you think i do. lol