two small points , the bubble trap should be last IMHO as the plants and stuff will cause u bubbles anyway and useing a wet dry you should get a whole lot less bubbles that what you are now. i dont use a bubble trap in any of my FW sumps as it just isnt needed (no skimmer to cause bubbles ) secondly i would of made the final chamber as big as possible as that is where the evaporation will effect , the bigger the chamber the less wc u need to do.
what i would do is just take out the last panel of the bubble trap to maximise the second chamber size , then experiment with the final chamber to see if its big enough .
also i have had bad times the the fluval amonia remover as it can stall the tank cycle as the bacteria have no amonia to feed off