I've seen that trailer in the local Craigslist and had similar thoughts to those above... this trailer is going to be HEAVY, and I doubt anything was done to the frame or axles to compensate. The axles don't look to be too low, but nothing is mentioned about replacing them, so it's a question to be answered.
I'm guessing just the boards they've used to cover the walls add 300 lb to the trailer, to say nothing of all the furniture and cabinetry being heavier than original.
I agree that this would make a pretty park trailer, but would likely be problematic for lots of traveling.
Il Carriaggio ó 1975 Argosy 24 | Il Progetto ó 1976 Argosy 28 Center Bath | WBCCI# 15566
He has all of the virtues I dislike and none of the vices I admire. ó Sir Winston Churchill