There really isn't a static answer. A rough guide of 3-5 time the tank volume per hour is a good place to start. So 375-625, is a good estimate. But factors such as sump/fuge and skimmer size, drains, internal or external all play a roll.
If it were me I would go with a eheim 1260, but I don't know what your plans are for your tank or how it's set up.