I have a question. Considering the apparently active role you intend to take, I think it would be prudent for you to gather your player-base, and contact the leaders of the factions you intend to associate yourself with, before you actually start this faction. Also, your back-story features a lot of power-playing. It assumes roleplay that doesn't exist. For example, the concept of an IMG-based faction trying to conquer the Taus is inherently fallacious, since IMG is at its heart a commercial enterprise of free miners, NOT a sovereign nation. That's CR.
It also assumes that this organization is a long-standing one. If it had such a pivotal role, as your back-story seems to suggest, why hasn't anyone heard of it until now? What you ought to do is start off small. No battleships, MAYBE an Argus as a base of operations. Start a new diplomacy, and collaborate with the established factions to make a new one.
While I, personally, do not believe that another IMG based faction is necessary in the Taus, we'll see what happens. I wish you good luck, and the wisdom to avoid stupid actions.
"Things will not calm down, Daniel Jackson. They will, in fact, calm up."
