Well, that explains a few things. Since the bowl is going to be oval,
are you going to turn some, and hand carve the rest? Co you have a set
up to turn oval?
In general, for air drying you figure one year per inch of thickness,
will get you down to the 12 to 15% mc. If you have hand carving to do,
do it while the wood has some moisture in it because it cuts so much
easier.

The bowls will be oval turned. No carving is planned. I have an oval turning
lathe. I may set up a solar or vacuum dryer to speed things along.

http://www.claycritters.com/lathe/

Dan