I am also making my own minigames for the server. It will be 2 teams. Each team has archers and elytramen. The elytramen have to go to the other team's base and destroy a crystal, and the archers have to defend it
Also, I expect you are using spigot or bukkit? If the version is 1.13+, use paper. It is an optimized fork of spigot, that will make your server run smoother. If you are below 1.12, you can use Tacospigot, which is an optimized fok of paper, making legacy versions run faster.