Upcoming auditions for locally based independent feature film...

I have only just registered with this site and my sole purpose for doing so is to get the ball rolling for casting/auditions for a low-budget independent feature film that I have written and am looking to direct at some stage in the future. The film is a dialogue driven ensemble comedy with eight major parts and a few cameos. The reason I am doing it on this site is that it is probably better suited to theatre actors, also, my experience is more in theatre than film. Finally, I am still toying with the idea as putting it together as a play if I cannot get the technical assistance I need to make it as a film. At this stage, I am just looking at whether it is worthwhile starting an auditioning process. Any ideas?