I'm looking to put 33 x 11.50 or 12.50 x 16 on with new rims.

I'm getting mixed feedback from tire shops on rim size...

My DD says go with 10 inch rims on 12.50's...and 8 inch if I go 11.50


So..questions !!

Can a 12.50 live on an 8 inch rim?
Will a 10 inch rim stick out WAY to far?

What backspacing/offset works on a 3 inch lifted VX for these rims?
I'm OK with some cladding surgery.I have anesthetic (rum!!) ready...for me!

Any input much appreciated.

jo