Hi KYFLASH,
There are some guidelines in post #3 here and the posts it links to that may be useful for those that are in higher weight ranges but the best way to decide on which option or firmness choices would likely be best for you with an online purchase would be with a more detailed conversation with the manufacturer. They will be the best source of guidance and will know more about their own mattresses, the options they have available, and helping to “match” their mattresses to different body types and sleeping positions than anyone else … (see mattress firmness/comfort levels in post #2 here).
Yes … latex is very flexible and bends very easily and is among the best choices for an adjustable bed.
Phoenix