If you don’t have a lot of nerf guns, practice with what you do have.
Melee Warriors, who use swords and axes in favor of blasters. They can take down enemies easily, but a well aimed shot is their downfall. They might carry a small sidearm. Snipers, who use long-range rifles to shoot down enemies from behind cover. Infantry, a warrior armed with a rifle and sidearm. These are the most numerous, and are well adapted to any situation. Assassins, or spies. These can infiltrate the enemies base and quickly and silently take down an enemy or eavesdrop on their plans.
One idea is, to have a reliable easy security system. During a Nerf War, have at least one person who guards the fort. Another good plan is to have other little bases in the area, so if you main base is captured by the enemy, you can retreat to a smaller base to regroup your team and nerf guns
Have two-three Infantry. They are the backbone of your team. Their primary weapon should be either the Spectrum or Hera. They should preferably have the Kronos as their sidearm. Have two Snipers. They should be armed with a Nexus Pro and a bi-pod and perhaps a scope, and should be sniping from some sort of cover. Have two Scouts. They should be armed with two handguns, preferably Blitzfires for their power and easy prime. Scouts will go ahead on the battlefield to see what the enemy is doing. You only need one Melee Warrior. They should be armed with the Nerf Warlock (a Battleaxe), the Nerf Marauder (a long sword), or Shadow Fury and Thunder Fury (twin swords). They might have a Storm Squad as their sidearm. A tank is good as a battle opener or backup. You only need one Tank, but they should be equipped with heavy armor and at least three weapons. They will need a backpack or holster to carry it in. Good weapons are the V-Twin, Tomahawk, Savage Spin, Nemesis, Prometheus, Matrixfire, Commandfire, or Destructor. The Assassin is the ultimate weapon in terms of hit-and-runs. They are good at stealth, and can spy, or infiltrate the enemy’s base to silently take down an enemy warrior.
Think about the possibilities, the outcomes, and the consequences, but don’t overthink; you need to be able to act quickly, even if it could end badly.