adding inches to 4 inch lift

Hello again. Finally found a dana44 rear end, and I'm having to have it
rebuilt...
Replacing the dana35c before it breaks. ( maybe I'll break it and send the
pic to Bill)
Now, I have 4.10 or 4.11 gears, whichever they are, and 33 x 12.50's
I'm wanting to get 4.56 gears, for more pep. I've heard that I can even run
35's with this gearing? In that case, I have the Pro Comp 4 inch lift kit,
stage 1. Whatever that means.

How much higher am I going to have to get that 4 inch lift to fit the 35's?
Will a 1 inch body lift do? Or maybe the body lift and a 1 inch spring
spacer? I have no idea what would be good, but I prefer something "proper".

I"m open to any and all suggestions... Thanks in advance.

Troy