1. Behaviour in gusts -> needs to be able to absorb gusts well, we never get high steady winds, always with big 10+ knots gusts
2. Wavesurfing: I fly the kite actively, so it needs to be
* quick (yet not too), 3. Jumping: also want to be able to jump in high winds obviously ; compared to my current kites, the Park 2012, I'd like it to float more when returning to earth
* dump power quickly or put the power on easily, and
* easily steered while depowered
Unfortunately your wish can not be granted
The "wishes" are very common, yes, but impossible and no kite can even come close
Above list is very very opposite "desires" that require two almost completely opposite kites.
Gust absorbing, dump power, steered while depowered, quick:
Most wavekites are like this, small - low camber - not too low AR but not high either - tight rearlines when depowered.
Jumping, and with more float:
The absolutely opposite, namely bigger kite - high camber - and not possible to steer when fully slack rearlines, as you have with such a kite in waves most of the time.
But awesome hangtime and float.
So I would choose one or another instead - as you can not get both.
You WILL drop like a rock when jumping, if you are using a good wavekite that suits in size.
And a kite that lets you float in jumps, will be useless for waveriding.
The best you could do IMO, would be to get a 6m wavekite for waves, and use your 8m2 for jumping