Naturally, gathering together the power of these Sith ghosts would require some effort, but I was side-tracked in my quest by the Empire needing my services.
I was sent to destroy a target at the Foundry, only to discover this target was Darth Revan, the Jedi-turned-Sith-turned-Jedi who'd provided a great deal of inspiration to me. My strike team overpowered them, and yet they escaped. How they survived for three hundred years is a mystery I'd pay a great deal to have solved.
It was, at least, a very nice distraction from the ghosts in my head driving me insane. However, I am now on the track of a ritual that should heal my mind and allow me to control this power.
In other news, I discovered my Starship while I was hiking this afternoon. It's rather utilitarian in nature and I will have to do some serious redecoration to make the interior livable, but it is formidable in combat and has a very long range.
Although... The incredibly comfortable bed can stay.