So, I've decided to go with a traditional skimmer/sump setup like originally planned. I've already got the skimmer on the way, so now I'm looking at suggestions for a return pump. I'd like a DC pump that can be Apex controlled, but if you have any other suggestions I'd like to hear them. My overflow has a single 2-3/8" (1-1/2" pipe) hole in the middle and two 1-1/2" (3/4" pipe) holes on either side. With my head height (40") at full siphon on a 3/4" pipe, I should have about 1200 GPH (correct me if my math is off). That is sufficient that I can use one 3/4" pipe as my main drain with the 1-1/2" pipe as my emergency, and the other 3/4" as my return. That way if the main drain gets a blockage, then the larger emergency drain will start and stop it's siphon which should alert me to the problem. Does that all seem logical so far?