You can do much better than that for risers. Look on Ebay you can get them for $25 to about $50 depending on style. If you use HD risers stay away from Deuce risers, they have a lip on the bottom. You could always grind it off and they would be fine, just so you know ahead of time. Then get a set of adapters from Scootworks.

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!