I am also in a similar situation as you. A local guy wants to put the readylift SST on my truck, but that's 400 for the lift and 250 for the install, not including alignment. Sound pretty expensive for what it is.
To me it looks like the RC Level lift is bascally the same thing, only 150 bucks instead of 400. The big difference I see is no bump stops on the RC lift.
Then the last option I am leaning towards after doing lots of research is getting some bilstein 5100's. leveling the front and then seeing about spacers for the back after the 5100's are installed. TopGun customz makes rear spacers for dirt cheap at all different sizes