Knitting Zen

I looked for, and found, the Muench Yarn website, but neither of the yarns called for in the vest pattern seem to be there: Muench Wuhan, and GGH Sprint. It's knit with one strand of each. Great. So now I've got to figure out what I could substitute. I used to automatically veto patterns that called for circular or double pointed needles. Now that I can do that, the main reason I don't make a pattern is that it calls for some obscure, esoteric yarn that I either can't find or that costs a fortune, or maybe both.