We are having a somewhat large wedding, 300 people invited expecting 150-175 due to everyone traveling out of state. We are using the photographer who does our family pictures she's great and affordable! with that being said I am wanting some photo's while getting ready (towards the end) some first look photos, ceremonies, couple/ family photos and some reception photos. how many hours do I need? would 6 be enough, 4 is required or do I need some more than 6?