I have read a great deal on Lincoln -- likely more than you - and I know exactly what he said and the context in which he was saying it.
But if you want the discussion, please define what a racist is. Only with that definition settled, can proceed to the arguments pro and con.
A racist is a person who claims that their race is superior to other races. You claim to be an expert but ignore evidence that proves your assertion wrong. I know you can't prove your assertion, you might try to restate it; but asserting an opinion with out any supporting evidence does not make it so, my guess is that our discussion is over.