Well, comments - it looks good
Clean and simple. Are you against baffles? A filter sock is good but gets clogged up often. You'll need a few or need to frequently rinse out your sock. It's your choice on size - a lot of people use 200 or 100 micron. I am using a 4" (diameter) 200 micron filter sock right now.
Where's your square bucket fuge going to go?