WRT row 86, I believe these seats are blocked in advance, but usually assignable by CX elites (not sure about non-CX OW elites). However, I've often seen them go "unblocked" a day or two before the flight, and if they remain unassigned, then you should be able to snag them from CX or probably even AA.
An ExpertFlyer subscription is good for viewing the seatmap to see when the seats go unblocked.