As I have stated in other posts. I would skip propane.
Investigate how many BTU's come from a unit of fuel.
With propane you are stuck with one company - the one that provides the tank. You can purchase a tank but they are expensive and no one really does this. And every time you switch propane companies - they trample thru your home and record every serial number of every appliance. Too mush hassle.
With oil you can pick any company. And as I have previously stated build in some redundant heating. Oil and electric. A wood stove is good. Monitor keresene heaters provide great heat.
Probably a good idea to check into an automatic generator while you at thinking about all of this.
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