You can go with anything on an F-150 from a 2" level to a 16" lift. All depends on the height you like and how much cash you're willing to spend. A 6" kit will cost around $1300-1500 depending on options and if you install yourself or not. But if you do a 4x4 you should be able to fit 35's under it with just a level. Search on here for the tire fitment guide and check out the 2009-2014 section. I've got 35's tucked under a level on an 07. Hope this helps!