Yikes sounds like a lot of work, I didn't think of the cables needing to be longer but your right. Might have to just live with it awhileYou have a quill stem. You will need to measure the diameter of the handlebars at the clamp to know the clamp size. The best way to measure that is with calipers. Look for riser quill stems. 5" is a lot. you may need to do a combination of replacing the stem and the handlebars. The Jones SG 2.5 Loop Bar has a 2.5" rise. It is also likely you will have to replace the brake and shifter cables with longer cables.