Brief setting... In april I will lay an aircete slap, on top I will place a 20×32 military tent in which my experimental RMH will come to life. I am designing for effiecientcy all around including space, fuel, labor, materials and to easily disassemble, modify and fine tune. First question. Can aircrete be used in the fire box? All my other questions are on this simplified drawing of many other drawings. The lower two questions are in the bell FYI. The thermal mass wrap around bench is not shown in first image. First image is most accurate and useful. you can ignore writing on other images. Thanks for reading!