At least split the logs in half but quarters would be better. Seal the ends and place them in a dry spot with a little air movement but not out in the wind. The bark is going to be a bear to get off and it would probably easier while the wood is green. If you do remove the bark, seal the back. Some say it isn't necessary on whitewood but for me, why take the risk. If you don't remove the bark you should use a bug killer on the bark to kill and grubs or eggs that might be present.
You can also take one of the staves down to floor tiller stage, strap it to a form with a bit of backset and give it a month in a dry place and you may be able to start tillering. Pat