Folk is a broad field - Folk Clubs all vary in how they functin , and often start as one sort and gradually change to something totally different .
Best of luck with your club Robbie , an 'Everyone Sing Together' is one format which is of the rarer variety .
If you do produce a 'Club Song book' , can I suggest that Sources of songs are not forgotten , particularly , Composers should always be credited for their work and posssibly whoever the singer you collect'trad' stuff from .