Tonight I finished sanding the canopy fairing. Over the weekend I had given it one more coat of high build primer and picked up some more 400 and 600 grit sandpaper. I also happened across a curved sanding block with a radius of 4 inches, which is exactly the radius I needed.
The sanding went well and I am pleased with how it has turned out. I taped off the area that needs paint and will paint with a 2k primer (once it arrives in the mail). I opted for a spray can primer because I feel the spray pattern tends to be better than when I use my own spray gun system.
My biggest concern with the fairing right now is whether the tape, which forms the aft edge, will come away cleanly from the very thin layer of resin and fiberglass. will find out next week sometime.