Buy it for the 4.7 alone, that motor with 80k hasn't even been broke in yet. I've got 200,000 on mine, it has zero hesitation, doesn't have any leaks, and always passed emissions.
The first gen tundras, I wouldn't consider a true half ton, and the springs in the back end can be a little...
B tags typically sell out in August, they bump to restricted if they sell out prior to August 1st. If your first tag is a restricted tag, you can buy a second restricted tag after August 1. There are thousands of B tags available after the draw.
A few links from the CO BHA page.
https://www.backcountryhunters.org/open_colorado_s_unleased_state_trust_lands_to_public_hunting_fishing
https://www.backcountryhunters.org/colorado_state_trust_land_access_report...