I was told I can assign a kick to one key and a snare to another and a hat to another,,,,,etc. I have the manual, but it doesn't mention that anywhere.
check out NI's Battery... similar to FL's FPC but a lot more... and it has multiple outputs so you can layout each patch to a mixer channel, I think it's 8 out but i'm not sure now... i don't really use it with FL cuz i prefer to work each drum sound individualy in the step sequencer... but i do use it a lot with logic...
but definately FL's FPC will do what you want to do if you're looking to play drums across the midi controller...
peace.