Lowering 91 Chevy Suggestions

[91OBSChevy]

Hello everyone, this is my very first post and just wanted to introduce my self before I asked my question. I didn't know where to introduce myself so I'm doing it here.

I have a 91 Chevrolet C1500 on 265/35/22 and I want to lower it more but I can't go too low because my driveway up to our house prevents me from doing so. It's already lowered a bit but sits high in the rear and I simply don't like that look and instead of just leveling the rear I want to go lower all around, so if you guys could help me out with this, give me some advice on how low and mayor post some picture i would appreciate it very much.