I have the same tank and highly recommend the KLIR DI4 filter roller. I have a 3D print file I can’t send you for a replacement filter sock tray that fits the KLIR so you don’t have to mod your sump. Then all you have to do is increase the height of the filter sock chamber with some plexi or whatever.
also, since I didn’t see much about equipment, I wanted to use the big chamber as a fuge and the smaller chamber for my skimmer. Took me some time to find one that’d fit but the Eshopps S-120 fits without any issues and is a beast of a skimmer. That way you can have the biggest fuge possible, if that’s what you’re going for.