VIKINGS VS PIRATES

Hi,
I want to start a new project,
VIKINGS VS PIRATES

My idea for now is,
2 Teams spawn on 2 island with some houses, they need to get money as quick as possible to upgrade houses and build other buildings to get weapons and defenses, after a certain time the pvp starts, the two teams can fight and they need to destroy a ting(don't know what yet). In the fight the teams can blow up each others buildings and get money for it.
the game takes about 2 hours, and after the fight is over the map resets and two new teams can fight!

Features
- Boats (upgrade able)
- Random underground caves and tunnels
- Maybe a plugin instead of commandblocks....
- YOUR IDEAS

If you have any suggestions or if you want to help me building/programming the map, please contact me in the reactions!