There are too many unknowns, variables, and personal preferences involved for anyone to know with any certainty based on specs (either yours or a mattress) or “theory at a distance” without a reference point of mattresses you have tested (see mattress firmness/comfort levels in post #2 here) and it would also depend on the other layers and components of the mattress as well, but If I had to guess I would guess somewhat softer than firmer.
The better options and possibilities I’m aware of in the Huntsville area are listed in post #2 here.