I just want to keep carbed water for my wife to mix in some Crystal light. I brew beer and have a set up for carbing and dispensing from my 5 gallon corny. I thought I would just leave 5 gallons of cold water at 30 psi and then pour it out of my picnic tapper into a mug and mix as desired. Tell me why I am wrong. . . And do it like I am 5. Should this work? I just want to avoid buying a case of diet coke once a week.