Yes forget the cedar and use a medium density hardwood like ash or elm.
Reduce to floor tiller.
Dry slowly initially, drying can get more intensive as the stave dries further. Eg. once most of the moisture is out of it there is less chance of damaging the wood with heat.
You can dry it with a hotbox, a car on a sunny day, a plastic tube with a light at one end or a slow burning pit of coals etc.
If you have a set of scales weigh the stave once reduced to floor tiller. Then keep weighing it periodically. Once the rate of moisture loss has slowed you can start hitting it with heat.
If you get impatient start another one! I'd probably do 3 rough outs from different species of tree.