Pretty sure with the dimentions brad posted, he is probably getting a marineland 300DD (glass)
Regardless, 1800-2000 GPH through a sump designed for the tank in question is plenty (if not excess) for the skimmer/heater(s) to do their job.
In my experience having excess flow through a sump actually decreases skimmer performance.
Let alone the noise/evaporation factor.