I love making shoot shafts. I've come up with a couple of rules of thumb for myself when choosing wood:
1. If it makes a good bow, the wood will probably not make a good arrow. Good bow wood will spring back to its original shape after bending. If an arrow does that, it will be very hard to keep straight if it started out crooked.
2. Pick the straightest and most perfect shoots of whatever wood you use. You will not find many, but it saves a lot of time in the long run.