I'm IC so I can only say what I have heard.
1. I'm sure they will let you break up and sell down to holding a minimum of 3 PSAs if you are selling to existing contractors. If you are at 3 and want to go lower I would doubt they will allow further breakup. If they have switched the PSAs to 5 then there is a chance they will let you break it all up but I have no basis to tell you that is true.
2. Would assume it will be the same as last peak.
3. Don't screw up, if you do make sure it is well before the 6 month period of negotiations before your new contract. If you are solid, don't have continuous accident problems, pickup issues, and satisfactory numbers you won't have anything to worry about.