Other Vintner's Best® Apple Fruit Wine Base 128 oz. into 6 gallon?

[Jswo23]

so im thinking about making a batch of apple wine from Vintner's Best® Apple Fruit Wine Base 128 oz which produces 5 gallons. my question is, is it possible to add a gallon of preservative free apple juice to make it a 6 gallon batch?

 

[bkisel]

I would do it without any major concerns. If it were not to late I'd prefer adding a gallon of raw apple cider.