Interesting hand quiz

[ggbman]

1.) Flop raise depends on my opponents, calling is fine in positions

2.) I raise here, the pot is big, we have the second nuts, and dont want to let the naked Ac redraw or give a set a chance to fill. Both these hands are very plausible given the action so far. I make 2800.

3.) I call

4.) I call

5.) I call