Speed pro is a fast bike I thick you might be disappointed to miss high gears that dual drive yields. What about looking for the internals on ebay. I got 3X7 for next to nothing from ebay. And I recently missed a 3 x 9 for less than £50. Its easy to swop internals if that's needed. Then you also have a spare hub body to get parts to repair in a relaxed manner and a spare wheelbuilt up for flats etc.