I got SWMBO an Island Mist kit...she is wanting to brew this weekend, but the kit is calling for an 8 gallon Primary (I bought her a 6 gallon Primary for the kit). Has anyone made one of these kits with less than 6 full gallons? Why do you need 2 gallons of head space? Do We need to wait and get an 8...or can we RDWHAHB and BREW?...Is wine making really called brewing?