I wouldn't attempt going to MK for NYE if you are arriving on the afternoon of the 31st and staying at POFQ. #1 The traffic getting to the park will be terrible. #2 The lines to get in at that point will be terrible. It was about 1pm they started restrictions at MK this past NYE.
If I were you, and I'm no expert, this was my first NYE there, I would stay at WDW, whatever resort you pick, on the 31st. Go to EPCOT or HS or even stay at your resort and ring in the new year there so you can be well rested for rope drop at MK on the 1st. Even if this means you have to stay at All Stars and then move to another resort, it's worth it for the early start. I told my kids, this will not be a "sleep in and get up whenever" vacation. With the exception of the 30th and 31st, we were in the parks before opening. This really worked out well as we did everything we wanted to do.
We did MK on the 1st as it had the lowest predicted attendance. We had PPO at BOG for 8am. We did 10 rides by 1pm and left as it started to get crowded.