Induce the Obscura to attack the Boarine, and get them a Manufacturing Outpost. That'll tie the Obscura up for years, while you put the Acutian War Industry in power and pay them to blow up the Obscura's planet. 20 minute victory.
In all seriousness, get outposts to as many races as you want to have survive, have warlike races attack the Obscura to prevent either of them from going after the peaceniks while you tech up with the Andor/Evucks/Skylaxians. Consider blowing up the last Obscura planet, you can take the influence hit since you'll immediately win.