I don't get the 8 bag route. I realize the final bag is going to give you the purest product, but I have a 4 bag kit and after my first go round I got rid of the 3rd bag because it had nice stuff that I didn't see any advantage to keeping separate from the final stuff. So what do you do with 8 bags? Do you keep the extract from each bag separate? It just seems like a big bother.