Wind Smurf said..
How about the Patrik QT wave or if you wanted something like you said that planes early then they have the F-wave too, check out his website, theres a video. I've got the 113 QT, planes fairly early but not as quick as a freewave, their F-wave is really quick.
I was to recommand the Patrik F-wave as well. In 85L, I think its more than enough for 70kg.
I have the Patrik TWW 83, which is the predecessor of the F-wave. I use it intwin with a pair of MFC TF 16cm. I'm around 75kg. It floats A LOT, almost like my fanatic skate 100 2010. It glides very well off the plane and then planes very early with little power. It pops well for basic freestyle like vulcans.
It's pretty stiff on the wave,( especially with the fin all the way to the back of the box) but it is still much much better than the skate. Actually not that far from my pyramid 86 2016/17.
It 's pretty good for side off float n ride, way easier than the pyramid. It's not so good for powered up side to sideOn, where you want to turn tighter. But then the pyramid does the job very very well.
The 92 TWW or 95 F-wave, must be a very big board for someone below 80kg, to the point it's probably wingfoil weather want you want to reach for it...