ah i don't feel so alone any more!
um well i was gonna do comp as 1 of my electives but found myself really uninspired when trying to think of something to do so i switched to musicology, but the thing with not doing all performance is that it's not completely based on your performance or whatever at that time- like even if u know your pieces really well you could forget it and screw u up- i did that in my last assessment and walked off the stage before i finished the piece, not good!- so doing comp is better in that way.
really, if you are willing to put in the effort for comp and have some good ideas for it then go for it, but if u don't know if u can do it or not then just stick with perf or try musicology
hope that's some help to you!