Pvp survival no mods 1.7.10

We host a fun Minecraft server and we have a growing community of
friendly users who play regularly. The server hasn't even been
up for a week and we already have 20 players who play on a day
to day basis. We hope to get enough MONEY from donations to upgrade
the server so we can have a maximum of 100 players, right now we are
only capable of having 40. We also hope to spread the word about our
new minecraft server so the server has a constant 35 players playing at
the same time.