I will be kegging half of my newest I.P.A. for the first time, not sure how much corn sugar to use as I have been told to use less than half of what would be used for bottling ? the keg is 2.5 gal. and uses the mini co.2 pressure system so it will need to be primed as I have been told and read ? first time keg jitters ! any help or input would be greatly appreciated ! thanks jimbo.