Important thing to note...your 44 gallon tank actually only holds about 14 gallons of water, the rest of the volume is composed of the air (stored energy from the pump). What you really need to know is what is the pump capacity and the well recovery rate. If the well doesn't have enough (fast enough) recovery, then you'll need to reconsider that big tub, or make room for a much more expensive system to store and then pump water for you. With the supply lines you have, I'd be surprised if you can flow more than about 10 gallons/minute (maybe 15). Basically, once you start to fill that thing, you'll have the pump running continuously until it is full. You'll need one hell of a water heater, too. My unprofessional opinion.