Welcome to Geekhack, fellow Texican!
Congrats of the QFR. I don't have one, but I hear they are really nice...almost as good as a Filco!
I don't really know what you can use to remove pad printing from ABS keys. I know what you shouldn't ever use, and that's acetone. But I've actually tried naptha, boiled linseed oil, and paint thinner on my Rosewill keycaps, with no success.