Provided you have spring clamps and an impact wrench/gun i dont see any probs.
But make sure you have the correct basic tools before you begin, will make life much easier than trying to bodge it with the wrong tools!
the torsion bar can be bit of a pain, did it to my old megane coupe, dont go too low as your rear shocks wont last 5 minutes (unless you've got shortened shocks), i bent a shock going over a bump with it cranked all the way down