You can have the co2 on its side if you install a siphon so you only get gas and not liquid. Same idea paintballers use on their co2 tanks.
Primary: Bipolar Squirrel Nut Brown, No Oats Oatmeal Stout
Bottled: Scottish 60/, Aunt Gingers XMas Ale, No Play I.P.A.
Kegged: Still dreaming.
"I have a right to nothing which another has a right to take away." - Thomas Jefferson