I need some advice.
 

I have a 2005 f150 stx. I'm planning on putting a 2 1/2 inch leveling kit on the front since the truck is currently raked. After I do that I want to install aftermarket wheels and tires to fill the wheel wells and just make the truck look better. So I need some advice on what size tires will fit after I install the leveling kit. I'm thinking 35's will be too big bit I'm not sure and hoping that someone has some advice/ experience in this matter. Any help would be greatly appreciated!!

Depends, what are you planning on using the vehicle for? Mudding or just street looks?
If you aren't going off road 20's might give you the look you're after without the expense of 35's.