It is a tough call on arrows for a selfbow, I draw 26" on a good day and shoot 55-60s out of my osage bow that is in the 52-54# range at my draw length and cut them to around 28" back of point.
My main osage bow is a performer, I have osage bows in the 56-58# range that like 55-60s the best.
My osage bows shoot poundage plus, my last hickory bow shot arrows that were spined a little less than poundage.