Enough Filtration

I have a fluval 404 on my 72 gallon. I was planning on also putting a couple aquaclears that I have around the house but they won't fit over the trim. It will be very heavily planted. Is the one fluval going to be enough or should I look for another canister?

Future fish list:

8-10 rainbowfish
8 rosy barbs
2 Bristlenose plecos
2 Kribensis
1 Albino Rainbow Shark
1 Synoditis Eupterus