Reading your post, it seems like you should just wait, and you will get used to this board, as you should be able to turn faster and more playful on this shorter and stiffer board
But, I agree with some of the others, that too short is not playful or useful.
At some point there is no room for nose rocker (scoop), which means you can not carve and surf around in the waves as playful and relaxed.
Which is why I love my Ketos Pocket 118 cm, and the older Groove Skate 120 is very similar, also a great board.
Being 78 kg.
Shorter than that, I also got a 90 cm board with no rocker, is fun just doing it, but very fast I change to the 118 cm as way better in every way, turns well, can go down on the whitewater or surface without risk, and pop up again, and also way faster waterstarts of course.
Some like the supersmall boards, I dont, except for the occasional fun, there are no advantages IMO, only downsides (if you dont travel).
I cant remember if the Moses 120 got loads of nose rocker/scoop or not?
If it has, then no problem you will have the perfect small board for allround fun
If it is almost rockerless and a quite flat nose (I doubt it), then you might have issues riding relaxed and playful indeed
We are all different in liking, but I really understand this feel you describe Foil.
PS: If you angle a flat board up for better touchdowns, it will give you a very uncomfortable stance front leg bent rear leg straight...