Hi bgaviator,
I would imagine so yes. This would allow you to customize both the support layers and the comfort layers as well rather than just the top layer.
They also have the Aloe Alexis which has two layers of latex which would also be more suitable for higher weights and is “in between” an all latex mattress and a hybrid with a single layer because it has two layers of latex on top. You can read more about an all latex mattress vs a latex/polyfoam hybrid in post #2 here.
The better options or possibilities I’m aware of in and around the Memphis area are listed in post #2 here.
While the choice between memory foam and latex would be a personal preference … I would be very cautious about any memory foam mattress that was that soft and had thicker layers of 4 lb memory foam in the top layer (such as the Cloud Luxe) with your weights both because of the risk of alignment issues and because of potential durability issues as well.
Phoenix