The dehumidifier that you linked is only rated for 18 ounces per day. You'll need something more along the lines of 25 pints per day and that may only put a dent in it with a large family. An individual adult can exhale three pints of water while they sleep, part of the reason why you are thirsty when you wake up. Then there's showering and cooking which releases moisture into the air. I lived alone in my 28ft travel trailer for a while, using a 25 pint per day unit that I had to run continuously throughout winter. I showered once a day while running the ceiling vent and only used the microwave. The dehumidifier was barely adequate.
You might want to start looking at these
dehumidifiers.