Am a bit more heavy than you.
But I have been using the last 2 years a Mega Cat with 250 ltr and had always diffculties to rail and achieve a constant speed and flow of the board.
With the F2 it is much easier for me to rail and to achieve a constant speed.
Therefore I like the bigger volume and shpae of my F2.
I think I need to test the new board to be able to compare.