I just purchased an Island Mist Kiwi-Pear Sauvignon Blanc wine lit from my LHBS. They told me I could primary ferment in my 6.5 gallon bucket and then transfer to a 6 gallon secondary. After reading the directions, it recommends at least a 7.9 gallon primary. I would like to get this kit started tonight, would the 6.5 gallon be adequate for this wine kit? It is a basic value kit and I am thinking the 6.5 would allow enough headspace for this kit and that more complex fermentable wines would need the extra space. Any suggestions?