Todzilla

Hello, rookie post here and I'm afraid it's of the predictable "what ski..." kind. So, moving swiftly along: What ski for a 6'9", 250lbs+, intermediate level skier who skis only on open water - Pittwater and the Hawkesbury RIver in Sydney (even out so sea from time to time, around Lion Island and into the surf on Palm Beach), doesn't do slalom but likes to turn hard and jump boat washes etc? At present i have a (very) old HO TNT Magnum (71") that i suspect i've damaged - the transition of the curve in the underside of the ski sharpens immediately after the rear binding. Despite that it's never been a very stable ski, it's tended to be very twitchy around the straight-ahead but would turn very well. Either way it's the better part of 16 years old and needs to be retired. Plus I just got a promotion so it seems like a good way to treat myself! I have access to a Big Daddy but i'm not a huge (no pun intended) fan of that - I prefer a longer ski as i've found the back of the BD skipping out from time to time, especially in heavy chop. I guess i'm looking for something at least 69" long and to that point the new HO Magnum must be in the frame (assuming they're a tad more stable), i've no experience with the Radar P-6 but it appears to be of a similar ilk to the HO. Can anyone else think of something I should be looking at? And lastly, can anyone recommend a good ski shop in Sydney? I've been out of the country for a while and all of my old haunts have shut. Preferably the shop would have a hiring policy as well, which is often tricky i've found for skis at the kind of size i'm looking at. Many thanks in advance Tod