ryan, i strongly recommend you make your aquarium as simple as possible. if you dont mind me asking, why did you choose two filter socks? long term, do you really want to wash and replace two filter socks constantly?
forgive me if you already know what a herbie style overflow is, but ill explain mine here: in the overflow for this aquarium, you have two holes. one hole will be your full drain, this pipe comes up just about 3/4 of the way of your overflow. put a cover of some sort over this, so that you dont impede waterflow, but prevent unwanted objects from being pulled down. the other hole will be your emergency drain. this extends barely above the water line of your overflow and below rim of your aquarium. cover this too!
below the full drain, you have a gate valve, it has to be a gate valve. this goes into my (only) filter sock just below the water line of my sump. the emergency drain also connects to a pipe below the water line of my sump. it takes a bit to finesse the system, but once you dial it in, you get every gallon per hour of your return pump going down your full drain pipe. you want just a little trickle going down the emergency drain, as much as you can tolerate.
this set up is SILENT in comparison to your durso.
for me the hum of the sicce return was too much. no amount of rubber feet or suction cups could stop the resonation. the switch to a simplicity DC pump was amazing.
i think i use a shark magnet, i had it laying around from the old days. scary powerful. i use that for as long as i can before i need to bust out my kent scraper for the coralline.
hope this helps!