i have a suggestion, maybe ask them (or ask around to other people in the class) what type they're looking for, tell them you want to show them you can play anything, but you have a 'special' peice planned that is all you, play what the type they want you to play to show your skill of adaption, then for the third, show your style off like a mofo, but something so complicated they may shit themselves, or play something moderately simple so well, they again shit themselves... if i was a 'judge' i'd honestly want you to show your adaption skills, along with playing skill, but i'd also want to see you play your style, that combination could be used to judge pure skill... and i still stick with one by metallica (you seem a fan so i kinda find this redundant to mention but just incase, 'one' is a song by metallica, with the perfect score of music [imho] that would be soft enough for anyone to appreciate, but all the while still being 'you' instead of just what everyone else wants to hear...

because without 'you' you're just a drone, i mean everyone, and i mean EVERYONE has thier own style, and everyone should stick to that style (in all things in life, not just music) because being someone else just isn't natural...

i can't say for sure because i don't know the people who will be judging, but for me and i'm sure alot of other people, showing the true you earns more points then playing any peice could ever do. it takes serious balls to throw away fear and be you when facing something like this, but it takes balls to survive the thing we all call life and living.