for a 91 suburban 4x4 1/2 ton 6 lug

Trying to figure out what tire I want, looking at probably a 35-36". I have 15" wheels right now but I'm considering up to a 17-18"

For a suburban is the lug pattern a 6 on 5.5?

And as far as offset, do I look for anything particular? I see one website has MT's - Wheel Size: 17x9
6 on 5.5 Bolt Pattern
Offset: -12
Backspace: 4.5

is this what I'm looking for?