One tip: Don't necessarily count on the FP machines being open when you arrive.
From your countdown it looks like you will be visiting in a few weeks. We went to AK on an EMH day last January, but didn't arrive until the park had been open for an hour or two. We split up our party with a couple of us going to get FastPasses for the group while the rest went elsewhere. It turned out that they weren't even using FPs that day. By the time we rounded everyone up and got in line, wait time was 5 min or less.
Hard to beat those January trips when the weather is nice.