I started with a 16' then went to a 20'. Sold it and went to a 18', perfect. Enclosed trailers are nice , and I have one, but if you can only have one trailer make it an open with a winch.
Do you remember what model the clutch disk you used was for? I am doing this swap in a 50 shoebox and need a 9 1/2" clutch. I found one for a 74-78 mustang 2 I'm going to try with the stock pressure plate.