Hi firedog127,
Welcome to the Mattress Forum! 
Thank you – I’m glad you’ve found the information presented here to be helpful.
Both Soaring Heart and Sleep On Latex are members of this site which means that I think very highly of them and that I believe that they compete well with the best in the industry in terms of their quality, value, service, knowledge, and transparency. They are extremely knowledgeable about latex and different configurations, and I would not hesitate to recommend them for your consideration.
You may wish to take a look at something like US Box Spring makes in the foundation thread here.
You certainly could place a foundation directly upon the floor without damaging it or the mattress, and then place it upon some sort of a frame or bed set once you are done with the remodel.
Phoenix