Church and auditorium lighting design is an art. The shape of the fixtures and lamps, the height and distribution of the lights and the type of lighting mount used can all contribute greatly to the available light in a room.
The structural wiring in many older churches and auditoriums simply cannot handle that much additional wattage. The solution is to switch to a LED lighting, which uses a fraction of the wattage and is much brighter and purer white. You can be assured of a drastic reduction in your wattage usage and major savings in your electric bill.