Hi allnaturallatex,
You certainly have some difficult challenges to deal with but if you can connect with a good local manufacturer or retailer that carries what you want your odds will be very good of finding a mattress (or having one made) that will fit all your needs and preferences.
There are some great choices available in Massachusetts depending on where you live. Normally I need a specific city or zip code but it just so happens that
post #2 here
has links to all the lists that are likely to be close to you. While I don't know what type of latex each one carries ... it would surprise me if at least some of them didn't carry the version of latex you prefer.
Also what would you recommend how deep a mattress would be best for my size, 8",9",10"-,13" etc., and what would you recommend the breakdown be in ILD? Would you recommend three layers or two?
There are too many variables and individual preferences involved to use a formula to try to design a mattress based on height/weight, sleeping position, or even health information that would be "best" for you out of all the thousands of possibilities that are available in the market. There is some fairly detailed but generic information in the
mattress section
of the site that will give you some insights into the theory behind mattress layering and design for different body types and sleeping styles but these are not specific to any individual person. Each different design and combination of materials can lead to a different answer ... especially when your own unique needs and preferences and challenges may be very different from the norm or any "averages".
I would strongly suggest avoiding the temptation of trying to design your own mattress ahead of time based on specs (either yours or a mattress) and instead work closely with the retailers and manufacturers that are of interest to you and use careful testing and feedback from your own body along with the expertise each of them has about their own mattresses to help you make your best choices. Your body doesn't understand specs ... only what I call PPP (Pressure relief, Posture and alignment, and Personal preferences). The quality specs are important to know (so you can assess the quality, value, and durability of a mattress) but "comfort specs" are best left to the people who design and build the mattress when you are testing mattresses in person. Because of the many differences in design and different possible combinations of materials that may work equally well for you ... you may even find that each manufacturer has a different suggestion for you.
Post #8 here
from earlier today may be helpful here as well.
Most people would be fine with a mattress in the range of 8" to 9" but
post #14 here
talks about some of the potential benefits of a thicker mattress.
While you've probably already read this ... just in case you haven't
post #1 here
and the information it links to is perhaps the most important post in the forum when you are starting in your search.
A couple of other posts that may be of interest in your circumstances are
post #6 here
about the different types of latex along with
post #2 here
about safe, natural, green, and organic which may also be of interest.
Phoenix