Depends how heavy you are! I'm not into jumping, but my 5'2" 6+ stn 12yr old son jumps with a stiff breeze on a 1.7m Speedy 2!
The other day we had him tethered to a 4.9 blade 2 in a gusting to 30+ wind - see
http://www.sidcot.org.uk/kite/ for pics. Before the pics he (feet) got to about 12' . All of this WITHOUT jumping! This was at Uphill on the
otherside of the water from you with a turbulent off-shore wind over the dunes :-)
and
http://www.kitezone.co.uk/powerkiting/pkamenu.html for some good info. - hit the Jumping Button!
At 15stn the blade will lift me with ease if I let it.
When not trying to buggy I like to skud (feet on the ground!) Using the blade or my 2.3 Vampire.
Don't kill yourself :-)
Kind regrads
If your at Uphill, Club night it Tuesdays, Drop in to the wind zone :-)