If you have family that is from the South then I think that you are going to be pretty Black. Assuming that y'all haven't be doing no swirling in recent times; If you have ancestors are from:
Georgia or South Carolina- then I am going to put you Blackness at about 87% to 95;
North Carolina, Tennessee, Virginia- then I am going to put your Blackness at about 82% to 92%+.
My folks are from Tennessee; they moved there from mostly Virginia and North Carolina. I am 87% Black+1% from Yemen which I am also counting as Black because it is fukking close to Africa; so that puts me at something like 88%.