Now the bad news - I warped it. Evidently, while pinning the center section of ribs, I lifted the ends a bit and it dried that way. What a shame. However, Bob you gave me a good idea. I'm going to make a 1/4" frame, and skin it w/ 1/8, then proceed to sand the **** out of it. I will make sure the grain of the center is at right angles to the skin. The sanding should go right down to the 1/4" on all edges.

BTW - the base is just over 1/2" wide, so 1/4 + 2x1/8 is a good approximation.

You can see the warp in this shot: