I had hoped to make them sit flush with the top. It occurred to me that I'm going to have a fairly big chunk of the birch left over when I cut it length wise to get the top piece so I guess I can just cut the little top doors from the left over piece but the grain won't match. Therefore I can just drill a hole anywhere and not worry about it.
I also realized earlier that I stupidly miscalculated on the trim that is going around the edges of the top. The top is 8' long and I bought 8' long pieces of tirm.
That means they aren't long enough to do the 45 degree angle cuts to join them at the corners. Have to figure something out there.