Thanks for all the advice. I am planning to ferment in the 6 gallon bucket with a loose lid. Then transfer to the 1 gallon jug. I may be able to get a mason jar's worth left over for topping off. I don't have the ability to cold ferment so it will be fermenting in a room at about 74 degrees...
I pressed some home grown grapes last night and ended up with 1.2 gallons of white juice. What size container should I use to ferment in? I have a 1/2 gallon jug, 1 gallon jug, 3 gallon carboy and my regular 6 gallon plastic fermentor bucket.