Precious little evidence been shown to support your claims other than some politicians writing decades later trying to cover their assess for their crimes
And the first quote from Davis was before any call up for 75K troops, before Lincoln even took office. He was intend on taking the war north from the get go -- two years earlier, he had said that if Republicans won the presidency, he "would be in favor of holding the City of Washington, the public archives, and the glorious star spangled banner, declaring the government at an end, and maintaining our rights and honor, even though blood should flow in torrents throughout the land".
The bombardment of Ft Sumter was an act of war against the United States of America. It was intended to provoke action, to bring VA etc into the fold (see speech by Pryor at the time)