This is all opinion of course, but:
Pull over and shoot it out with a kid in the car? That's option number last. I don't care what caliber you're using; it has less knockdown capability than a car).
Sideswiping a motorcycle with your car is not likely to jostle the car's passengers enough to cause much harm. Maybe some bruises at most.
The likelihood of the assaulting bikers getting a shot off while being sideswiped is negligible.
Again, getting into a firefight with a kid present would be option number last.
Sent while walking the narrow road.