Hi Nicholson,
It sounds like you are making a good choice for all the right reasons.
There are too many unknowns, variables, and personal preferences involved in choosing a mattress for anyone to make specific suggestions about which mattress would be a good match for someone else in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences) based on specs or “theory at a distance” (see mattress firmness/comfort levels in post #2 here) but the mattress shopping tutorial includes two links to lists of the better online options I’m aware of (in the optional online step) that may be worth considering as well if you wish to broaden your search.
Phoenix