Screeper,
That setup is basically what I did to mine. The pricing seems very reasonable. Phil has a good price on those.
The tierod ends are a must. The tires don't seem high to me. I paid 390 a piece for mine and that was the seller's cost. I know there was a price increase and availability was extremely hard to find them. So 475 including mounting and balancing seems okay.
You'll love those tires btw.
Gears, I went with 4.56's. I actually drove mine for a week or so before putting the gears in. I can't believe the members that have liftkits can drive without a gear change. Highway speeds absolutely suck without gears. I can't speak for anyone else but having to put the pedal down just to maintain highway speeds, my gas mileage went from 11'ish to 8.6
Put the gears in and it's back up to low to mid 10's. (I have a heavy foot but then again, I didn't buy the H2 for gas mileage)
Unfortunately, I'm still not completely happy with the performance at highway speeds. I'll be adding a supercharger soon.
You'll definitely want the reprogrammer. I went with a superchips and it seems as good as the Hypertech I had on a Yukon. Changing shift points helps but more importantly, I wanted my speedo and odometer to be right on.... and since you can change the tire size by 1/4" increments on the superchips, it's pretty accurate.
You'll love the truck when it's done, it'll look great. I'm sure I'm the only one that HAD to do it but I had driveshaft problems. I went through 3-4 driveshafts before we figured out it needed to be 2" longer and I had to make mine out of aluminum for decrease vibrations.
Like I said, I'm sure I'm the only idiot that had to do that, I hadn't heard of anyone else having that problem.
Good luck and post some pics. What wheels did you go with?
Mark
PS. If you need me to check with my guy, he had the tires in stock.