Good faith is fine, but a quick phone call to your agent may help to reassure you that you already have coverage! Not for a full-fledged business venture, of course, but for the type small scale project you're talking about. Most home-owners policies do cover that type of thing, but it's better to know that you don't need to be worrying needlessly.
Good luck!
Sara
PS AND, in the event that you do have an incident, you have shown your good faith by having done your homework ahead of time!