I did just what you are saying. Bought another guitar,pickups and bridge because of being disappointed with the Kemper. My opinion, only buy a guitar because you want too, you still might not be happy with the Kemper. For me, I am a gear junkie and have no problem buying new toys.
i want to buy it (les paul traditional) because i like it and not because of the kemper. Are you happy now with the kemper after you changed the guitar?