Ricky,
If you plan to use it for lams, my experience has been that you can go ahead and rip and grind it close to desired thickness, put it in a hotbox at about 100 or so degrees for about a month or so, pull it out, grind it to exact thickness and build a bow. If you are planning to use it for riser wood you got some waitin'to do. You can cut it in half inch thick slats a good bit longer than your riser, because it will check at the ends, dry it in your hotbox like the lams I discribed for several months, and laminate it up to your riser thickness after trimming the checked ends. The other option is to flitch saw the log, sticker and stack for a few yrs and then build a bow.
Im waiting on some persimmon and osage to dry now so i feel your pain.
Dan