The 'Fleshlight forums' have a number of threads and FAQs on choosing the right toy,
https://forums.fleshlight.com/forum.phpI can't comment on the suitability for
you, though. All of 'em that I've looked at had a tiny hole the size of a pencil, and unless that shit is WILDLY stretchy it flat
ain't gonna fit me. The only take on various models that I read was that the interiors that give "the real feel" aren't nearly as popular as the ones that give maximum stimulation.
Different models fit different guys, and they don't spec the sizes very well there. You can mix and match the interiors against the exteriors, but I'd suggest reading a LOT there before you make a choice.
Any suggestions you get from the guys here are gonna be their own experience with their own cock size. Your mileage WILL vary.