Downsized trailer, how my set up look?

Yes I agree newer tires With the tires in the corners it should be stable, will you add a couple of jacks?

How is the wiring set up?

Good thing the trailer is empty, or the weight police would be all over you!

You need airbags. What is the GVWR of the TT?

It looks like it came with a wet bath. Is that what you really want? Also, you obviously need a weight distribution hitch, probably around 1000 pound spring bars, to keep the trailer behind the tow vehicle and not to get into a sway condition. Don't let those on here that might try to tell you that you can tow it on the ball safely and if I were you I would get a one ton dually to tow that beast. Get rid of those junk Chinese tires that it came with. Otherwise, you never know!!!!