Mark,
ERC is tough wood to build your first bow out of. That is a beautiful stave though. If I were you I'd be letting that one season a while longer and looking for some other local bow wood to get my feet wet with. Hickory, Ironwood, mulberry, osage, elm (and probably others) are all easier to build bows with than ERC. That's just my opinion, but if you want to go cedar, this is the best place to get your information. I'm an osage guy so I can't help you much from experience. I've been watching for a straight, clear cedar branch out at my deer lease. So far I haven't found it.
Good luck,
George