Dude, it's Mega Man.
Mega Man music in general tends to take priority to everything, since it all rocks your face off so hard.
Also, don't be nervous. Just make some bad ass music. I'm not in this to win the competition, I'm in this because I fucking love Mega Man and the soundtracks of Mega Man and want to do some justice to them.
Oh, and I've been wanting an excuse to do ANY song from Mega Man 7, which probably has the best soundtrack of the original series.