sweet! so aside from splitting would i want to debark right away? how long is a stave usually going to need to season?
It really depends on how soon you need to make a bow out of it. You can split it, debark it, and rough a stave almost to floor tiller and then let it dry indoors for 3 or 4 weeks and it will be dry enough to proceed. Keep a check on it to see that it has quit losing weight and you will know it is dry enough for finish tillering. If I rush one like that, I make sure to seal the back and ends with spray urethane or shellac to avoid drying checks.
I would split it out into staves and leave the bark on it, seal the ends so they won't check, and let them dry till they quit losing weight. If they are indoors where the bugs can't get to them and off the ground, staves can keep like that for a long time.
I think it is winged elm too. One of the best bows I ever made was winged elm. It loves a good toasting.