Thanks. I widened the trunk by an extra 1/8" before putting it in. I was worried about the centerboard sticking.
Routing the centerboard slot went really well. Using a trick from another guy on here, I leveled the sawhorses in the port/starboard direction and then flipped the boat over onto them. I then set the router on the centerline and leveled it using shims between the router base and the hull. I marked the shims and taped them onto the router based and then attached the edge trimmer. A picture is worth a thousand words:
Next, I used the round-over bit. That went less-well, but my screw-ups can be fixed easily and will be glassed-over anyway:
I think I'm going to put on the keel, coat it with 3 coats of epoxy, and then splash it. I need to add oar locks as well. I'll paint the outside in the coming weeks.