I' m testing cedar arrows right now. I got a test pack from Rogue River Archery in spines form 60-83# after calling and chatting about my bow, and current set-up. They seem to be great people, and I have heard nothing but priase about them. I have yet to order shafts or arrows from them though.
http://www.rogueriverarchery.com/
You may also want to talk to Troy Breeding: (closer to your home
)
http://home.hiwaay.net/~arrowman/