Also I was wondering if you could harvest ghost chilies green, and let them ripen?

It takes a while. How long exactly no one can say as there are too many variables. The Hot Pepper Forum would be the appropriate place for this question.

If you picked them now it is more likely that the peppers would either start to rot or start drying out well before they had any indication of ripening.

Rodney

Thanks for your help I appreciate it!