Queta will almost certainly be available, as he is raw and not particularly athletic. Think poor man's Jhalil Okafor. The other three will almost certainly be gone.
I don't expect anything more from Queta than I see on film. He already shows specific elements to his game that would make him a potentially fluid backup to DA. These are:
Plays straight up post D, minimizes fouls.
Great rim protector and rebounder
Solid alley oop finisher and efficient scorer
Great passer from post
Sweet hook shot in the post
Good PnR O player
Good all around game for a back up C
While its true that he is raw and has some awkward coordination (and oh so horrible at perimeter D), there's enough there to take a risk in the late first. It will certainly depend on who's available.
One caveat I have is that it will take him a few years to get his NBA legs. There's a reasonable chance that he pulls a Richaun Holmes and leaves before you get your draft value. But that's almost always the case with big men.