For foot warmth I use fleece socks. They are pricy to invest in but last years. Look into Sierra Trading Post on line. They sell a set of 3 pr of men's fleece socks for 1/4 of what some of the prettier designs sold for women. Generally a male shoe size is two sizes smaller than women's sizing. So for my 11 sized foot, I order a 9 in men's. these things are so great, my husband wears them for foot warmth and he doesn't have RSD to contend with.

Other than that, I feel your pain. I got RSD when I lived in Michigan, it took my husband 2 years of looking and fighting to get a transfer to a warmer climate. Just opening and losing the door to put the dog out caused me immense pain that was hard to get past. We had a heating pad that was long, like about 1' x 2'. It was long enough to wrap around my arm and then I would just sit, plugged in to the wall. The furnace never got it wam enough. Layers. But you already know that. Warm thoughts, Sylvia