i tried a couple of yarn calculators online, and after combining their info, i got an average of 5.71 stiches per inch for the mountain colors line, putting it in the 12-14 WPI category, and therefore it's DK... or #3... or light worsted... such as vanna's glamour line. so there's my starting point? (you can tell i'm going to ask the joann's ladies for hand holding in the yarn aisles...)
"i'm not great at advice. may i interest you in a sarcastic comment?"