6'1", 210 here with back issues. Did a couple 5hr trips in January with fuel (well, mostly bathroom) stops at the 2.5 hour mark. No problems at all with comfort with a 115lb'er in the front and two kids in the back.
Alan let me get a few hours in this before I bought his '75 F. The engine fires and runs solid and she flies fast and true. You won't find many of these with the 6-pack panel either. Heck of a deal for a solid Mooney.