Thanks, again, you have cleared up my main concerns here. I was helping a fellow pick up some wood from a logging operation about three years back for his Winter wood supply when this log came in, about two feet in diameter,and, eight feet long A fellow operating the mill said they didn't have much use for it for veneer purposes and when I noticed the straight grain, we made a deal right there and brought it home. I took the bark off it immediately and split it into what you saw in the photos and it has been in an enclosed woodshed ever since. It is not showing any signs of check marks ( I had sealed the end with white glue ) and sure is dry, appears to be about 7-11% which is dry in this neck of the woods. I have some smaller pieces I will experiment with first with your advice and hopefully turn out a self bow that's workable for 2008.
The heartwood in most of the split out sections is likely 4" compared to the sapwood layer which is 1-2 inches - it varies - very few knots but there is a bit of twist - in most sections, I think it can be worked around. It split great and followed the grain for the whole length. These sections are still eight feet long - hopefully lots of room for all the errors I will likely make.