I'm running gas pipe from a 500 gal. propane tank 200 feet to two small houses. One house will have a 9-21k btu heater, and a stove (4x 8k btu burners and 15k btu oven) and the other will have a 21-36k btu heater, a stove (4 @ 9k btu, 2 @ 12k btu and two 20k btu ovens), and a propane dryer (22k...