Either way it's going to be pretty rushed for P1. Maybe they should just film it as one part.
Wowow, if you're referring to how they're going to film the MJ movies, back to back or in one part, I thought they WILL actually be filming the two parts as one movie, even though they will be released as two separate movies. If you're trying to make a case for just making and releasing one movie, that ship has already sailed and has disappeared over the horizon. Danny Strong already finished the Part 1 script and is working on Part 2.
It seems your mind is made up, that the schedule is "rushed" and will negatively impact the quality of the movie. But for others who might be concerned about this , let me make some points.
Gary Ross dropping out because he didn't think his directing style would be able to keep up with the schedule, doesn't mean that Francis Lawrence can't keep up with the schedule. Indeed, I'm sure that his ability to jump into Catching Fire on relatively short notice, played a part in why he was retained for the MJ movies. Unlike Ross, Lawrence is not a scriptwriter, and seems to have no problem "farming out" much of his work, and so have people working with him; Trish Summerville has candidly spoken about essentially subcontracting out a lot of the design work to other designers, or even using already-made designs such as the Alexander McQueen dress Effie wore in her Capitol Portrait. (Though I'm sure Judianna Makovsky had help, too, I don't recall her doing any designer name-dropping in her interviews.) This style of more collaborative work, means more can be accomplished in a shorter time, because more people are working on something at any one time.
To address some other points: While the CF filming did wind up being stretched beyond December, but I'm sure that Lionsgate had advance notice that X-men would start filming in April, and that they had TIME to do this.
As for awards shows, actors CAN work around them. Jennifer Lawrence went to New Jersey to film some scenes, right in the middle of award season. Also, on any given awards show, even the Oscars, there are always actors who accept their award in abstentia, or via some kind of video link, because they're busy filming.
While I'm sure Jennifer will be much in demand now that she's an Oscar-winning actress, I trust that she is too much of a professional to let herself get overloaded with work to the point where it affects the quality of it. Even if she wasn't, the contract she signed for the MJ movies mean she HAS to show up for filming, even if it conflicts with any new projects she takes on. This is the same situation as with X-men, she HAD to honor the contract that if she's told to show up to film X-men, that takes precedence over any other work she's doing.