Lots of information is needed to help. How many guns ?

A couple of general suggestions. If you can, make your ceiling at least 9 feet high. It is so easy to poke holes in low ceilings.
Put in more lights than you think you need, then add some more. The modern non-incandescent bulbs are best as they burn cooler than incandescent lighting. Same advice for electrical receptacles. Add as many as you can.