best filtration sequence is mechanical, biological then chemical.
Detritus will be trapped so quickly in the first sponge filters. Better to have the skimmer first, so that it can remove the biggest baddest particles first. Then all the finer filter material. I will also try to place the bigger filters first, then the finer filters later. Or have filter socks first to catch most of the stuff. But does not matter, fine filter material or filter socks are both an extra maintenance that needs to be cleaned weekly.
Chemical should be last, else they become blocked with detritus way too quickly, reducing their effectiveness and lifespan.