Two coats of the sticky black stuff. Wasn't quite as messy as I expected it to be, made way more of a mess painting the frame.
Got the wife to help me flip it over and set it back on the frame - perfect fit! Counter-sunk the fender washers so bolt heads are flush with floor.
Finished the cut for the front profile. Made first cut while the floor was upside down - blade is too small to do it one pass.
Did a test of the drop-well, the wife and I were both able to stand in it with no creaks or bends - very solid!!! Here, my youngest poses after testing for ballet readiness.