Make it hard for the enemy to get in, and you won't be able to get out. No matter how much you carry, you'll always run out of something. You'll always need what you don't have. There are only two times when you can get eliminated during a game, when you're alone, or with someone else. Your paintballs will bounce on him, his paintballs will break on you.
Incoming fire has the right of way.
Any plan, when explained by the team leader, will have as many different interpretations as there are players who have heard it. No plan survives Initial Contact.