Lift vs leveling kit questions

[Fireman23]

Just got some 295/65/r20 Toyo AT2 extremes coming my way in the mail today. Looking at taking my current stock 2008 f250 King Ranch and putting some type of small lift on it. From what I have seen they shouldn't rub but I'm thinking it wouldn't hurt to put a 2.5 front and a 2in rear lift on it. What is the recommended way of doing this? I'm looking for a cost effective option, somewhere in the 150-250 range. Thanks for the help guys