As for heating; how much do you really want to spend on it?

If the house never gets below freezing on the inside, then there is no danger of bursting pipes and burstings cans. So then it's a matter of keeping yourself warm. Proper clothing works for that.

Personally, I rarely use the heater, unless I got people coming over. I'm just used to the cold. The temperature inside my house does not drop below 11C.

As for cooking; as an outdoor person, I got plenty of stoves and fuel.