As the moderator & others have suggested, definately speak with the instructors of each specific class/school, see which if either seem the best "fit" for you!
Something else you might consider, post to other message boards
(sorry Mr Caille
) whose members have the same condition/mobility issues which you possess... (provided there is such a group/groups, and 99.5% likely there is....
There at minimum you will attract somebody's response, "...hey I am a X year practitioner of... with RHS mobility issues..." my guess, my guess would be Judo in so far as Internationally (as an organization) they have been around a long time, consequently might well have someone in the main headquarters who could refer you elsewhere with deeper experience more locally.