I'm 6'4" and 200 lbs. We got the 26" frame, not sure if the biggest, but it was right for my Mums height. I could have gone a bit bigger if it was for me and had the seat fairly close to fully extended to ride it comfortably. It was straight forward but it's very different sensation/experience to riding a normal bike with gears - Much slower and more sedate. Tell you what, PM me a cell number and I'll speak to my Mum, call you and arrange for you to get a trial ride and see yourself. You're in San Pedro right?