Chokecherry certainly is a good tough arrow material. I have a hard time finding enough that are straight enough, the right size,and knot free enough.
I switched to red osier. Grows like crazy, easy to identify in the winter and seems to make a great arrow.
I cut about 5 dozen red osier the last few months. I peel them the same day as cutting, let them dry a few days and start straightening them.
Good luck!
Patrick