should work fine.
I just added a 30ppi foam panel in my first DIY and LOVE not using a canister. Similar design but using baskets between the divider panels.
More costly for the larger pieces of foam but it eliminates more splash just using flow through foam panels. Two panels coarse to fine seems OK here but still tuning things and using lower flow rates (less power used on pumps)
2 & 3" widths of 15, 30 & 40ppi foam from AngelsPlus
hope you post a a thread on the build because freshwater sump threads were hard to find when I built mine.
Shows the final divider placement w/o media baskets