Its not impossible to do such a show, but one needs more information.
Are these original songs, or covers you intend doing? What kind of genre are you working in? Any performance experience whatsoever? Do you have a Facebook page or website where some of your music is available for venues and booking agents to listen to?
Also have a look at this thread - some relevant issues in there:
http://www.guitarforum.co.za/performance/profitability/