I'm planning on booking my ticket tonite within the two week window for my "K" fare.

Is it safe to say F availability on ITN can be determined by looking first at F and P availability and secondly at the premium seat map to see how many premium(potentially elites I would assume) have already booked their flights?

And this is probably a stupid question, but do you have a better chance of upgrading on flights orginiating around noon excluding M,F?

Thanks!