I was originally going to go with a full coil-over set-up also.. what is wrong with the CPP notch you already have in? it looked done well, thinking of a bigger one?
well if you stick with the CPP, I've got a free part for you if you want it.. it's a Competition Engineering rear coil-over kit. it's only like a $150 kit (or something) I welded it all up, built it to work with a CPP cnotch, basically it bolts flush into the rear two bolt holes of the notch, the bar sits on top of the frame rails, but still clears the bed. this is the widest setup you can go without mounting coilovers outside the frame rails and sacraficing tire width.
I will never be using it as I won't be going coil-over, so you can have it if you want.