Well, the Sensei is ambidextrous, not right-handed, so maybe that's what you're looking for? There's the Razer Orochi, which is wireless, ambidextrous and small. The problem with wireless is that they won't really be lightweight compared to corded mice due to the battery, but you could also give the RAT M a try.
You could take a look at my writeup and see if that's any help, although I'm afraid there's not all that much in terms of size and weight comparisons. Maybe that's a good idea for an update.