The only thing I can add to this discussion is if you're intent on going solo, providing your audience with variety is essential. Sometimes an evening of nothing but guitar accompanied songs gets a little old. Break up your show with a little storytelling, an a capella ballad or two (if you have the voice to pull that off), and if you have an aptitude for learning musical instruments learn to play something other than guitar. Pick up a mandolin or a banjo or a concertina, maybe a hurdy gurdy! There are so many wonderful "folk" instruments that audiences love to hear, and in my humble opinion singer/guitarists are a dime a dozen, but singer/guitarist/accordionist/mandolinist/fiddler/ukulele players are much harder to come by. I'm not suggesting being a musical dilettante (which is what I am) but you'll be amazed at how learning a second instrument can expand your repertoire, your potential audience, and the way you think about music. Best of luck to you!