I plan to replace the cup with a type that has a removable bearing from the cup, thus allowing me to bond the cup into the frame to eleviate the movement in the headset.

Maybe it is not the way it should be done, but I would do it this way : mix some epoxy resin or glue with graphite or micro-sphere and put chopped cf strands and mix well, after cleaning the surface wedge the mixture between, you may sand all the surface with some heavy grid to have nice bonding surface. Thats my way to do it, I'm not professional but it worked in all my repairs. The strands have to be chopped to really small pieces.