I have no plans of having a high volume stringing business, but I would like to string a few racquets a week for other people. I use Pro Supex Big Ace myself, so I will already have that on hand for anyone else who is interested. Aside from that I was thinking of keeping a synthetic gut in stock, maybe either PSGD, Gosen OG Micro, or Pro Supex Titan, and maybe one other type of string. Anyone have any recommendations? Should I just buy 16g?