So for summer, how many long sleeve body suit sleepers should I have? I'm thinking 3-4 should be…

So for summer, how many long sleeve body suit sleepers should I have? I'm thinking 3-4 should be plenty. Just want to make sure I have a couple incase and when the baby goes to his dad's. Also regular pants? Again he probably won't need to many just want to have a few for cooler days or if we are outside at night or go camping and just to pack a couple when he goes to his dad's cause who knows what he'll be doing there. I'm getting him two light coats, that should all be ok for warmer stuff for summer?