Travel nurse thinking of buying a TT....advice appreciated!!

I would recommend an OpenRange TT's. Big but Small. And they are commonly found with 2 Air conditioners already installed and have a homely feel and lots of good features at a reasonable price. And A Tundra will pull up to 10,000 pounds. So get a TT with a dry wight no more than 7,000 pounds because gear adds up weight fast.
And asfar as MODS, all you would need is a weight distribution hitch and I would recommend sway control bars. And all that installed would be under $500, and your good to go.