Are you sure you really want to go to all that trouble just to be able to fit 33" tires?
If you just go up to a 75 series tire like 265 75 16 you will almost be there at a 32 inch size with NO lift needed. If it is to be a daily driver and mileage is an issue you might want to reconsider, even if you regear the diffs you will still use more gas because of the extra rolling resistance of the wider tires. The BFG A/Ts would be my LAST choice if you require good winter performance, my Revos are great for winter and may not last as long as BFG A/Ts but I'll trade that for superior winter traction anyday.
IMO as hard as the Tundras are on gas already and considering the price of gas, lift kits and big tires are too much of a compromise for a daily driver. I just went with the 75 series Revos to give me a little extra height over stock and even at that I notice a slight decrease in fuel mileage and power due to the slightly taller tire and that's enough of a compromise for me but to each their own
To me it just does not seem to be worth it unless a person was planning to go larger than 33" tires.