Does your district have a good libertarian support? I know here you are an almost shoe in if yu have an R next to you. Also do you know about your other third party opposition?
I'm the first Libertarian to run in this district in a long time (ever?). State and National LP candidates likewise haven't done well in this district in the past. As you mentioned, having R by your name pretty much guarantees you'll win.
As best I can tell, I'm the only candidate besides the Republican. He's an unpopular county commissioner and there's no Democrat running, so those could both help my chances.