Pretty cool! I have two recommendations
1. Install small overflow box in skimmer tank and go with a straight Herbie instead of the durso. It will be quieter but more importantly eliminate the air bubbles at the sock so less issues relating to salt creep and humidity. You're already putting in the two drains, so really super minor change with a decent benefit.
2. Emergency overflows in your Brute containers that tie into the drain for your laundry sink. Just encase those manual floats get stuck or leak.
Also consider an the same thing for your main sump.