You'll get more coil bucket contact with 3" up front. I love my deaver add-a-leafs in the back and personally think its the most solid way to lift the back and save your springs some too. The ride with the deavers will be a little stiffer though, but I like it. What are you planning to do with the truck or is it just for looks, etc. Or how much money you can spend. Cause I would just go straight to for some radflos up front and then whatever you want in the back. All depends on what your willing to do.