Nyos 160 or 220 for a RSR 350?

[Reef Monster]

Hi all, I'll be setting up my RSR 350 either tomorrow or the following day and moving over my FOWLR RSR 250. I currently have 8 fish (Hippo Tang, Yellow Tang, 2 Clown Fish, 2 Bannngai Cardinals, 1 Flame Angel and 1 Yellow Watchman Goby. I plan on adding more fish in the future. I'm currently running a Nyos 120 but want to upgrade to a Nyos 160 or 220 to compensate for a potentially heavier bioload. Which one should I go with?

 

[Jay Z]

I’m running 88 gallons total with 20 fish. 3 tanks same sump. 160 has been more than sufficient for the load.