Not what you were asking but,
I have both, front suspension and a full suspension bikes, the front is used mainly in the wet and muddy British winter.
The full is a much more comfortable machines it’s more fun descending, surprisingly being heavier it’s quicker climbing as the rear shock helps with traction.
So I would advise trying a couple locally and see but I would be surprised if a short travel full suspension bike (100-120mm) was not more fun.
Tyre pressure is also key so see if they can demo them tubeless and dependent on your weight you’d look at mid 20's to early 30's in psi.
For gears then most of the 11x1 or 12x1 options are good enough but will depend on how much climbing you do and your attitude to ratio jumps