try Wa Surf they get prolimit gear in and they do it all online or can see there shop in safety bay or they can send it too you, and they can do a wicked price as well
www.wasurf.com.au/zencart then follow the windsurfing links, and in regards to ally or carbon if you got the money get carbon straight away because it allows your sails to work properly especially when your overpowered, because when you go through a gust or land big one handed jumps the ally booms will flex right out throwing you off balance and not allowing your sail to feel right