i would consider concerning your board size more the size of you body, then your preference in tricks.
If you are 6 foot high and having shoe size 13 a 7,625 is more easy to flip then a 9,0 - but in my opinion its
to small for you.
And yes with a "smaller" board you can flip faster / better - but with a bigger board you can control better.
So yes a flat 540 flip will be more "easy" with a small then with a "big" board.
But you will have less control if you try a simple backside kickflip down 8 stairs.
Try to find a board fitting to your body - and it will fits to you skating - no matter the tricks.