...

Next big thing is whether you would like to peer up with other p2pool or not.
Check p2pool/networks.py and find the altcoin you want to run a server for.
See following lines
        IDENTIFIER='e031F5b8c6924210'.decode('hex'),
        PREFIX='e290192ba6d4729a'.decode('hex'),
        P2P_PORT=9772,
P2P_PORT is used by p2pool to connect or allow connection to other peers (p2pool servers)
IDENTIFIER and PREFIX must also match