I'm from that area. I drive through Lemoore when I visit family. I was born and raised east of where you are, in Exeter. Are you traveling to Visalia, per chance?
If so there are several yarn shops there. The Knitter Haven "A Little Knit of Heaven" is on Church Street. I haven't actually been to that shop, but my Mom bought some wonderful wool there for me.
Anyway, I do think it's a good idea to get the 'feel' of yarn. It's so hard for me now to knit with acyrlic, it feels 'stickygooeyucky' lol
And restraint is a good thing.