dude, sounds like a goldmine!
well, i'll chime in first, but everyone will say the same, pretty much.
Don't leave the whitewoods down, if you can help it. Buck 'em into 6 foot lengths, give or take, and split 'em into quarters at least. Store the wood in a dark-ish, well-ventilated place. If you can ensure that air flows over them, the splits will dry faster than in a still place.
People say to seal the ends with paint or glue or wax or spray-on varnish...this ensures that all moisture leaves through the belly-side of the stave, and any checking (cracks) will occur in the wood you will end up carving off anyway.
Keep me in the loop. If your elm is any good, i'll happily trade you a couple of yew staves for a couple elm staves. I just did all this the other day, myself, and my room (apartment dweller) is FILLED with yew staves!
take it easy,
and get a sweat on...