Just a couple of comments that might help with shopping and decision making.
Count on the RV weighing lots more than you expect.
Watch out for RV salesmen. Many are a notch below used car salesmen. They will also make it attractive to upsize.
Consider buying used. RVs depreciate rapidly and many used RVs are virtually new.
If you buy a TT, look out. Many are built really cheap and tires and axles will barely carry the load.
As to that 12 year old Tundra, if it were me I would consider a pop up tent trailer or a teardrop or other very small TT. What you can theoretically tow might make sense for a local flat lander trip. If you are going to do cross country including real mountain driving, having a margin makes more sense.
BTW, I'm a fellow Long Islander, currently traveling: Badlands, Yellowstone, Glacier, now Olympic NP.
