A friend of mine gave me four Cornys, and so I am learning about kegging to get out of bottle hell. I have been reading threads and getting a feel for equipment that I need. I guess my question is about what way to go. Here is the deal. I have an extra full sized fridge in the basement that I want to set up to hold three cornys. I haven't decided to tap the door yet (wife would freak), so what I was thinking is maybe just get a small enough CO2 tank (5#?) to fit inside with the three cornys and spit it after the regulator to pressurize all three. But from what I am reading it sound like a 5# tank on three cornys won't last? But a 10# tank won't fit in the fridge right? What is a realistic plan? Opinions? Thanks