My own personal(not professional) opinion on bodylifting a BII is that the only reason to do it is to allow clearance for a V8 swap. I don't dislike bodylifts, but....
1) the bodymount bolts (especially the rear) tend to get VERY rusted into place.
2) a suspension lift is not a lot more work to install (I'd rather deal with grinding the rivets to do a suspension lift than replacing the body mount bolts...)
3) A bodylift leaves you with the same suspension you started with (and I have yet to find a BII that has a stock suspension that doesn't need a bit of help)
With that said, if you want to do a bodylift, go for it. If you do it properly, it should work fine.