As in covers or tributes? You should do the songs you enjoy! Even if other people don't enjoy your slaughtering the classics (kidding
), creativity is a form of expression as much as entertainment. As for new songs, then I don't know. My compositions for GCSE music were pretty poor. Depends what styles of music you like, but from the looks of the lineup you'll be doing pop/rock.
Have fun with your venture, in any case.
