Red - I would recommend at least 1500 GPH bilge pumps, 2000 GPH is better, that is like 30+ gallons per minute. Rule brand is fairly good.
Hint: Put a piece of screen around the bottom of the pump and zip-tie it in place. It will keep some of the trash out of the pump and make it last alittle longer. However it does reduce the pumping capacity. And Harvey is correct about the smooth hose. Flood the hull in your yard and time filling a 5 gallon bucket with corragated and smooth hose, it does make a difference.