This is just coming from what I've read and about 5 hours in the seat of the general but no mods to fit 30's and the low on the general is very low so I don't think you'll need a clutch kit w any 30" tire on the market. Clutch kit will come in handy as far as belt life goes but def don't need one to spin them efficiently
Skidz, what brand lift did you go with and are you running foward a-arms?
S3 3" lift and S3 Forward arched a arms. I wish they made the rears but they don't. I will probably be going with the highlifter rears as they are set and I don't like the SATV adjustable ones, just my preference.