I'm also short - 5'6" with a 32 inch sleeve. With the stock seat, it was a stretch, so I went with the Aeromach 4" risers. I thought they were great; felt much better - but then I saw the Scootworks PhattRisers II, which have a 6" pullback. I sold the Areo's on Ebay and went with the 6" risers, and man - am I happy I spent the extra money! Now I feel like I'm actually sitting back comfortably on the bike, vice stretching all the way out. Highly recommend the Phat Risers II. Caution - your cables will be too tight with the 6" and will work only if you reroute them to the inside of the triple tree. Even better, you can just buy new braided cables with an extra 2-3 inches, and route them as the originals were routed. Your call - either way works.