My oil distributor wants a minimum of a 300 gallon tank in order to make a free delivery, and he would prefer it to be almost empty to make the trip worth while. However, I discovered that his chief driver lives diagonally across the street from me, and stops at home for lunch almost every day. If I can finagle a tank larger than a 55 gallon drum, I'll be able to work out deliveries. Problem is, we don't use oil heat much around here, so there are no old home heating tanks. Once we get the house built, and I turn my attention to the refueling center, I'll talk to them about a bigger tank.
But, I think it will still be a gravity fill. No expense for a pump, no power to worry about, one less thing to break. Right now, I'm working on finding a large (500 to 1,000) gallon propane tank with a dispenser pump. I'd like to be able to fill my own 20# cylinders for mosquito magnets, etc., and be able to refill the motor home at bulk prices. I think I've got a line on one that isn't currently being used, but I haven't been able to get the guy to name a price, yet. I may just insult him with a disgustingly low price and see where it goes from there...