Well, early 1960s GTs are sought after. How bad do you want one? Will a 1972 Sovereign
do? They're cheaper.
Figure $1000 for the fridge.
Another $1000 for a new axle, which it needs, unless you're going to park it and never move it.
The dent in the right front will be expensive to fix, unless you want to live with it.
Some people dislike air conditioners on a vintage trailer, so it depends on your tastes, but if it doesn't work it's definitely a liability.
If you get a WD hitch with it that's worth $300.