Ok, so there's the toe bolt on top, and the camber arm on the bottom.
The bolt on the right side that connects to the body is elongated, for camber adjustments. My question is, the turnbuckle on the arm itself, to achieve MORE negative camber, needs to be longer (pushing out the bottom outwards, bringing the top inwards), right?

Correct. BTW get an eccentric lockout kit for any aftermarket suspension links.