What are you waiting for with the Fabtech lift? They've been available for a while.Sleepercivic said:
You could probably clear the 35's with just 6 inches, but you'll probably have to do some trimming to keep them from rubbing off-road. You might want to add a 1 or 2 inch BL.
I'm not sure about the price on the install. I've helped install a TM on a friend's truck and it was terrible (that's probably because it was used, though). Just ask them how many hours they're clocking the job at, then make sure it matches up with the standard labor rate in your area. Those kits can be had new on ebay for $1300-$1400 so it looks like they're charging you ~$600-700 for the labor to install.