How to create your action 6 Dekaron private server

My cousin is planning to have his own action 6 Dekaron private server to play for a few friends. He have a slight problem on what computer specification he needs. I suggest a few things and so here it is. Before you go making your own action 6 Dekaron private server, you should know how many players he will be catering because on the long ran, the more players means more traffic thus will lead into lag. So it is best you should get a fast and high end servers to host your own dekaron private server. Here the specification I suggested to him before making his own action 6 dekaron private server.

1. Dual Core intel or get Quad core intel processor
2. At least 2 gigabyte of RAM
3. At least 300 gigabyte of Hard disk
4. Perhaps a gigabyte LAN

How about you guys, what specification could you suggest on creating action 6 dekaron private server?