HAAK, on a serious note, check out the BOM stats for Aireys Inlet today (Tues) 5pm - 6pm. Very marginal winds sub 10 knots most of the time.
I had the 2010 15m Wainman "Big Mother" out at Danger.
I was on my trusty Stonker 135 tt, flat water no swell, I was holding ground most runs in and out, went down wind only about 50m or so a few times. We are about the same weight, heavy boned

Even in the marginal winds it still turned quite fast, 3 strut, nice bar setup, trim cleat above the bar, low bar pressure ( bar pressure was about the same as my 12m Flow FT ) and plenty of tuning options, very nice feel for a big kite and it is a big kite. This might be the kite you are looking for.
Next time you are over see Alex and demo it.