A friend does something similar to what you want to do. Not sure exactly how far he is pumping the water...it has to go up through the floor and then over about 8 feet. I know it is an external type pump, and think it may be an Iwaki. A BIG Iwaki. I'll double check and let you know what he uses. I think the one Broomer mentioned is also external. Look it up. Probably close to the same price as a Mag9.