'The original proclamation has no Constitutional or legal justification.'
So where does Lincoln say he beleived his actions to be unconstitutional?
Above, previously cited. And here, 'I felt that measures, otherwise unconstitutional, might become lawful.' If Congress had passed it as a law it might have had a chance at being legal, but Dictator Lincoln wasn't Congress.
And when does Dictator Lincoln admit that the EP could cause rebellion/massacre in the South? 'Nor do I urge objections of a moral nature, in view of possible consequences of insurrection and massacre at the South.' Face the facts, the Lincoln REGIME was was no better than Sadaam Hussein. He exercised powers as a dictator, overthrow and refused to abide by all legal controls, and could care less that millions of Southerners - old men and women, children - would be slaughtered. Thankfully, the Southern blacks were not the hate-filled depraved beasts that Lincoln thought they were.
"The original proclamation has no Constitutional or legal justification, except as a military measure".
'I felt that measures, otherwise unconstitutional, might become lawful.'
"I felt that measures, otherwise unconstitutional, might become lawful, by becoming indispensable to the preservation of the constitution, through the preservation of the nation. Right or wrong, I assumed this ground, and now avow it." Again, you said Lincoln believed the Emancipation Proclamation to be illegal. When the quote is taken in context then it's obvious that you are wrong.
'Nor do I urge objections of a moral nature, in view of possible consequences of insurrection and massacre at the South.'
From the Emancipation Proclamation, "And I hereby enjoin upon the people so declared to be free to abstain from all violence, unless in necessary self-defence; and I recommend to them that, in all cases when allowed, they labor faithfully for reasonable wages." Obviously they listened to Linclon and not the southern slavers.
Thankfully, the Southern blacks were not the hate-filled depraved beasts that Lincoln thought they were.
But since you expected the massacres then obviously you expected that they were and feared the worst.