Yay, progress!
If you happen to have a jig saw around, you may want to try rough cutting it (say, around 1/8" away from the line), before flushing it up with the router. There's a lot less burning, it's quieter, and it's easier and a lot less stressful (IMHO).
It may be a matter of preference, but I feel it's safer than removing a lot of material with a router bit (especially if you did that in one pass).