March sounds fine by me.
As for where, hhmm, I wouldn't mind if the next Invade the Rock was held in: Southwest Rocks, NSW; Ningaloo Reef, WA; Lady Elliot, QLD; on a Coral Sea Liveaboard, QLD; Eaglehawk/Tasman Peninsula, TAS; Bicheno/Bay of Fires, TAS; Margret River/Albany/HMS Swan, WA...