I love trig
team 1350 used binocular vision in 2006 somewhat successfully, I wasn't there to get the specifics, but it used 2 CMUcams and trig, and that was with the old IFI rc, assuming there is a target that can be easily picked up at a low resolution, and the servos controlling the cameras are accurate enough (the closer the object, the less acurate they need to be), it should be *relatively simple. Streamlining the rest of the code to free up memory should also help.
Hint, research "boids", it could help with programing how to react to other robots.