I would not dip in so much at the end on the front or backside, and that long stretch of wood you plan to take off on the front you should take off from the back.
I'd go in a little at the end front and back but not so much.
Let me do a quick sketch of what I'm talking about.
I think I can kind of visualize what you're saying...
Pic would be helpful thought!
Sweet!
-T