Personally, having had the ProComp lift installed on my Titan since June 2005, and then installing the SAW coilovers in April 2008, I first would recommend getting the SAW or Radflo coilovers ASAP if you go the the bracket lift route.
Additionally, when I bought the bracket lift years ago, there were not many options out there, other than the ProComp and Fabtech kits. Given the other options available now, I would not do the same thing again. Realistically, the PRG Extended Travel Package
[LINK] would be my first choice, followed by this style of setup
[LINK] if I had a larger wallet.