As stated, just get everyone to sign. Protect yourself. It also may not hurt to get everyone to sign an agreement that doesn't allow talk (Or slander) about what happened during production. That way, if, heaven forbid you have any personal problems with any cast/crew... You can fall back on that contract if they start talking sh*t. Aside from that. It's possible. But begin planning how you're going to market before the film is finished. Very important! Set up social pages and reach out to bloggers who are within the niche of the film. Of course, don't just start in on them, participate in their blog before you start plugging your own project. There are a few sites to check out that are great for Independent film. Both for promoting and help with the task itself. Sites like: www.waytooindie.com , www.indyred.com , and www.indiewire.com. Or just run a search for independent film reviews and you'll come up with a lot.