I installed the Rancho 4" lift on my truck. I paid $1600 for the kit. I installed the kit myself (took 2 days, but it was my first kit, I can now do it in a day). To have a shop install the kit, you are looking at another $800 roughly. That allowed me to run 35x12.5's with no rubbing using 8" wide rims under all conditions. If you go with a wider rim, you may find that you will get rubbing when out 4x4ing and twisting the truck up. You will also need to trim the front valance to give you the final clearance you need.
I have since upgraded to 37x12.5s still on the same lift. For this I ended up getting new gears which ran me about $1500 ($700 for the gears, $800 for the install), another $1400 for the rubber, and then I ended up having to do some body modifications which only cost me like $20, but a lot of my time. I had to modify the lower front control arms, tie the back of the front fender liner out of the way, and also cut the front bumper to give me the final clearance I needed to get no rubbing.
If you are near Maryland, I would tell you to come on over and we can get this installed over a weekend. Just keep in mind that you will have to pretty much tear the entire front end suspension off of the truck to get everything installed.