Firstly, I would recruit seven of nine, (if she was available). Borg knowledge on wormholes would be highly useful.
Voyager's Astrometric Lab, seems to be alot more advanced than that of any Federation ship's Stellar Cartography.
Another Alliance with the Borg may be necessary (if possible to transmit to them or even get to a wormhole) to win the conflict. They may be interested if they know that the federation sub-cells are in the area and may have information on the Imperial's strategies from being occupied., and since the Empire shows as much of a threat (if not greater) than species 8472.
I'd make a deal with the devil to avoid annihilation.
Then, I think I'd grap a phaser rifle and go at it with some stormtroopers as a suicide attempt at going down with some kind of dignity, fighting for the dying Federation. Cause, if I lived then, I would be damned before I call myself an Imperial.
Nemesis
"Better to die on our feet, than live on our knees" Brigidier Kervla, Star Trek VI: The Undiscovered Country