1) subscribe at https://cex.io/r/2/petreius/0/
2) buy GHS
3) wait some hours
3) calculate mining earnings/fee costs 
4) if mining earnings > fee costs continue else buy others GHS with NMC (namecoin) mining productions
5) when GHS value >> starting GHS value sell all GHS shares and go to Caraibi with your treasure ^_^ ...

Enjoy it !