Hi,
good to see that you have decided to come to S.A. , we have some great beaches for land kiting just north of Adelaide and its also possible to get a ride in on low tide at largs bay. Phil from the kite shop has a crew that get in to buggy riding so you shouldnt be alone with that one. Kitesurfing in S.A is great ,we have a good crew of guys who try and get out as much as posssible mainly at henley beach and largs bay. You may want to check out the saksa web page for all the rules and regs on kitesurfing in S.A before you launch any kite here as alot of beaches are banned and the others only take guys who have a saksa membership tag which means you have insurance. Your kites should be ok but you may want to get a smaller one cause it does blow over 20knots alot here during summer and in the winter fronts. Good luck and hope to see ya out on the water