I have decided to use the layout in my third idea (the L-shape). This is because the space created will be smaller and thus more intimate. The excessive nature of the videos will be revealed to a greater extent as they will be shown over a smaller area and therefore they will be able to be viewed together at the same time as well as separately. Obstructions (such as bulky lights and smoke alarms) will also be out of sight and as a result will not become distractions.