As far as the stance is concerned....I think you are nearly spot on. If anything, maybe drop the front a scoch--you don't want to end up with a saggy butt. - What are you currently using?
Come On Phil - ! You're killing me!
I recently found a pair of stray 5.5" from one of our famous FAQ brethren and now I have a full set of 5 to refinish. I'm not sure how I'm going to go about refinishing them, but the "Jack, mount, start, fist gear, scuff" method sounds more and more appealing every day.
Ahhh, Cosmics. Long live the 13" tire.
=Ben