This.
Again, not being any kind of way, but I don't know how you let that go unaddressed being OCD. I should snap some close ups of what I've done so far on my bay.
Not to mention the cut out portion. You could take some small hole saws and cut holes on the 4 corners. Then take a mini reciprocating saw or cut off wheel, and cut between the saw holes (connect the dots, if you will). Giving a cut out with radii, instead of nasty, jagged corners.