[mseepman]

Thanks for the suggestions so far. The reality is that normally the sq footage of your house, bathrooms, occupants, etc is very important to sizing the HRV. We have sized it already (though the heating company did this). In this situation, I don't really have the HRV for the main purpose of giving some fresh air to the house, we're focusing on getting that humidity out of the house quickly. Only the two areas with tanks will have vents. The return air will vent to the living room on the opposite side of the area from the tank.
I'm still leaning towards the 60 cfm as i think will be enough.