"Picked the fight"? There wouldn't have been a fight at all if northern abolitionists hadn't been dead set on preventing the spread of slavery into its "rightful" realm of all parts of the country climatically suited to plantation culture. Not an acceptable solution, of course.
Despite their moral outrage at the concept of slavery, most abolitionists would be seen as bigots by today's standards and would be aghast at today's integrated (sort of) America.
The other issues, such as states rights vs federal authority and agrarian vs industrial priorities, would probably have been worked through over time. The fight, necessary as it was, was picked by the north. Once Lincoln was elected, the die was cast. "Not my president!" (Where have we heard that before?) It was clear to all concerned that electing Lincoln would lead to schism, but that's how they voted.