Ryan, I would try making the air hole bigger.
I never saw a filter sock inside an overflow, but I've seen them on the output of the overflow in the sump. I don't use 1....just something extra that would need to be cleaned often.
If you cut the pipes so they dump above the water, it will be loud and the sump will be loaded with microbubbles.
I don't check the URS forum that often. It's a little too far north for me. The Southern Teir is about my traveling limit. Binghamton is only a little over an hr north of me.