I'd like to get in also. I'm planning on making two arrows, one sourwood and one hill cane. Not sure of other details yet.
In these arrow trades I like to make what I usually use for hunting or target arrows. If you normally make store bought arrows then that should be fine, if you make cane or hardwood shoot arrows then make one or more of them. I don't think this trade is about making a set of perfectly matched arrows. It is about making and sending one of "your" arrows, whatever that may be.