dkocol,
Been there, done that. I have had a '01 Access cab and now a '03 Access cab.
I went with a smaller camper made for small imports (Frontiers, Tacoma's, etc). Even at 1,200 lbs with air bags and a rear anti-sway bar I was not convinced this would work. The other factor is how much weight (and surface area) is above the truck bed itself.
In my opinion the max a Tundra can haul realisitically is a pop-up. Four Wheel makes the lightest I know of but Outfitter makes a nice one. It pushes the limits weight wise when loaded but it has a low center of gravity. Anything over a 1,000 lbs will be way overloaded when you add passengers and 'stuff'. Even though you will only use it a few weekends a year it still might concern you.
One final thought is to go to the folks who do this all the time.
http://www.Woodalls.com has a forum site devoted to truck camper owners, some of which are Tundra owners.
Joe