Our 1971 Tradewind has a wet bath. I believe it is the smalles wet bath of all he Airstream trailers of the 70's. It occupies about 70% of the rear cap.
To the curb side, it has a narrow door with a clothes pole inside, and a shelf which has the univolt and a blower motor underneath. i am also 5.9, 200lb +, and had grave concers about it at first.
But now, after owning the trailer for a few years, I am glad for the tradeoff. The tradeoff is more space in the front of the trailer. Most tradewind models that I have seen with the dry bath, had a very short front compartment. The streetside front window was a small window, and the galley had to move forward better than a foot. I personally prefer the larger living quarters.
I believe that if you want a dry bath, and have the same living space as the tradewind with the wet bath, look for a 70's Overlander. It has the same basic layout, roomy in the front, good storage, but comes with a dry bath.
The thing about the tradewind with the center pullout bed is that it has unbelievable storage. With 2 kids you might need it. We retract the center bed parially during the day, and end up with a great lounge to watch tv or read. I like the 25 size, as it is probably the biggest size one can effectively pull with a 1/2 ton Suburban. Well, I do believe I could handle the Overlander size as well, but not a Sovereign
or bigger. If I was to buy another trailer ever, it would probably be one in the size of the Overlander.
We're thinking of redooing ours to have a rear bedroom, and side bath.