I was tall at that age but had no problems fitting for years. Even now at 6'5 I can get in it but my knees go out wide and the steering wheel is firmly in the crotch area! Makes for exciting driving, one wrong move and you pay!
That's an idea to consider - treat the rusty spots and keep the paint or go for a respray? Margay couldn't tell me what paint code it is, they seemd to think it was corvette blue or somesuch. The engine is a Tecumsheh HS50, the minibike forums say it's a desirable engine but I can't find a rebuild kit for it so may have to piecemeal rebuild it. Like Dohn's bike, it's very loud and definitely annoyed the neighborhood.
Here's a pic I keep in the garage (weather damaged) of my son and I ripping a corner 20+ years ago before he could reach the pedals. Don't tell his mother!