welcome to the site.
please check the laws at http://motorbicycling.com/showthread.php?t=39266
(zbox link gives state wide info) before you get carried away.
just a caution on those chain idlers that tend to lean in towards the spokes.
- either adjust the chain to the right length, so you can get rid of the idler.
buy/engineer a better one that does not move.
there has been many a riders that have had accidents because these.