I'm getting ready to put my first beer on nitro but had a question about carbonating prior to serving. I am planing on carbing my 5 gallons of Chocolate Milk Stout in a corny with co2 before hooking it up to beergas for serving. What volume should it be carbed to? If I decide to naturally carb it, how much priming sugar should I use to get the very mild carbonation that is ideal for a nitro tapped stout?