Go thru all of the songs. The easy ones need a run thru once or twice a week, concentrate on the harder ones. Figure out what parts trip you up and make notes (cheat sheets) work the songs and parts that trip you up to death. Throw in the easy ones as a break from the hard work on the hard ones, you'll be fine. I don't care for country either but I did play traditional country years ago and I will say that country crowds are the best, at least it used to be that way.