First of all it's bindings, not being an asshole, but it's really annoying. Secondly, you should be fine. Rome has really roomy bindings and are extremely adjustable. It's better to have a snug binding than a large one. Just my opinion though, some other people should give an input too. I have Rome Mob Bindings and have an 11 boot, 32 Prion. I don't have the bindings, bt I know they'll fit. I don't know if that helps at all, but just some info.
Im all for having fun, showing your tits and getting fucked up on a river float but it can be done without being a pig.