Went with the 11.5 for one to try to keep it in the fender because the paint kinda sucks and chips easy and the second I do a lot of fire roads and nothing super crazy as far as rock crawling so don't need a super wide tire.
Installed the Dobinsons c59-821vb on the rear of my truck today they are the ones that give you a 2.25 inch lift in the rear with 440-660 pounds of extra weight. Super easy install took about an hour and most of that time was laughing at how easy it was compared to doing leaf springs.