I got a new beer kit for Christmas: Summer Cream Ale. It's a 6-gallon kit that produces an estimated ABV of 4.4%. I would like to increase it to somewhere between 5 and 6%, I don't have any added malt available, but I do have some table sugar. How much can I safely add without drastically altering the taste of the beer? Are 3 cups too much or would I be better off sticking with only 1 or 2? I thought about decreasing the volume of the kit down to 5-gallons, which would likely bring the ABV to around where I would prefer it, but I would like to keep the kit at the recommended 6-gallons if at all possible.