Looking for a new fifth wheel what are the issues w size

I agree with BC - Also, the old rule of thumb that about 20% of a fivers total weight shows up as pin weight is just that... a rule of thumb, nothing more. I have seen numbers ranging from 16% to 26% for pin weight as a percent of dry weight. Since a second A/C unit, probably your holding tanks, and most all of your gear ends up on the pin weight side of this rolling teeter totter, the final pin weight of various manufacturers' 32 foot fivers can be vastly different. Do not just assume 20%.