In my infinite wisdom, I made a homeworld in a quaternary system. (I might be mentioning this thing too much, but I find the values so absurd I just have to, sorry)
I saw a planet that was absolutely perfect and took it, not to mind the distances.
So, now I have a planet on a star that is 15000 AU from anything relevant.
That translates to roughly 2. 25 TRILLION kilometers, as best I can guess.
The hyperdrive exclusion zone is almost identical to my star's orbit, so those won't help.
I'm considering either a huge tanker with a tractor beam to be built as an escort to every fleet that leaves the main system (just until I can get ONE solid colony out there, I'll mass-driver all the resources and leave those systems off to their own devices ;P ) or just leaving similar smaller tankers in a line from the star -- the thing's orbital period is 1. 5 million years, so I don't think I have to worry about that too much.
Civilian trade out of there is pretty much out of the question.
Can anybody offer any more. . . valuable ideas?