I came back to biking at 235-240 & 5' 7". The actual size of one's butt is quite different from the width of the sit-bones. Big butt doesn't necessarily mean wide saddle.
For saddles, what part of you hurts? If you're a new rider, you have to break in your butt. If you've got specific complaints, let us know. That would help recommend something that would solve your problem(s).
For 35 mile rides, I strongly recommend bike shorts or thin shorts over liners. A lot of vendors make big shorts. Aerotech Designs promotes themselves to big men - good stuff at reasonable prices. In addition to Kucharik, Boure, Jandd, Pearl Izumi, Bontrager, etc. make shorts that are likely to fit you.