They went to no lengths -- none.
You can't name a serious length Confederates went to avoid war.
Indeed, right off the bat in his February 1861 Inaugural Jefferson Davis announced he would start war if he felt Confederate "integrity" was "assailed".
And that is precisely what happened at Fort Sumter.
DiogenesLamp: "Lincoln started the war by sending a fleet of warships to attack them instead of just ordering those troops to come home."
And you just can't stop yourself from lying about it, can you?
(5) Resolved, etc., That said commissioners be further instructed to present to the Government of the United States assurances of the sincere wish on the part of this Government to preserve the most friendly relations between the two Governments and the States comprising the same, and to settle, by peaceful negotiations all matters connected with the public property and the indebtedness of the Government of the United States existing before the withdrawal of any of the States of this Confederacy; and to this end said commissioners are hereby fully empowered to negotiate with the Government of the United States in reference to said matters, and to adjust the same upon principles of justice, equality, and right.