just a thought but i would play acoustic i would play

wanted dead or alive
bad company- shootin star ( just get the chords and improvise )
dont go away mad - motley crue
soul asylum- runaway train
ill be there for you

that would go down well i played those in my college for battle of the bands on my own with my acoustic an got 2nd, in my opinion everyne will like these songs or most of them and if your voice is as good as you say it is you should be fine

gaz