If i was using cfls and that cabinet to flower here's what id do. Id get two pc fans and two 12 volt dc adaptors and wire them up. (if you need help with the wiring let me know and ill walk you threw it) Than id take and cut two holes for the pc fans ( make sure to messure ) One of the holes on the top left side of the cabinet to allow the air to be ventilated. Than on the lower right hand side id cut the other hole for the fan, this will allow fresh air to be brought in the cabinet.
Than just Hang your fixtures and start flowering. It would be cool to put a lock on your cabinet.
let me know if ya need anything else?