After the wonderful recommendation to check out touringplans.com, I strolled over to that website and immediately signed my happy tail up for it. And it totally eased my mind on the planning side.

I was able to come up with a plan of action for each park, and even figured out I would have plenty of time to spare each day. Which is what I was hoping for. I wanted to be leisurely Mommy on this trip, not drill sergeant Mommy. So I figured up what times I wanted to snag for fast passes, and was ready to make them. Tuesday, I came home and armed myself with my laptop and was ready to go.
Started counting down the minutes until it was officially March 4.
11:58....11:59....12!!!
Got logged on and started to work through the website. Then got confused on how to do it...

Luckily that only last about a minute, and once I got it figured out, I went to town.
Then realized that it was not giving me the times I wanted.

Then decided I didn't care and I would just make what I had worked. I had snagged Anna and Elsa, and two days for Seven Dwarfs! I had gotten all the passes I wanted. Time to be happy, even if it meant completely reworking my plans. I stayed on long enough to get the passes for each day, then took my tired butt to bed. Gotta get up in the morning for work.
While at work today, I figured I would get on and see if it would let me make some changes to make it a little bit more manageable. And what made it better - I was able to change nearly all of them to the times I wanted!!!!
Okay, so not ALL of them (stupid A&E has to be difficult...couldn't move it at all). But at least I only have one day that I have to re-structure instead of like 4 or 5. I was especially worried about my Epcot day initially because my original plan was to do rides in Future Land in the morning, do lunch at Akershus, then explore the World Showcase afternoon and evening. I thought I was going to really have to figure something out for that, but luckily, my original plan is still intact.
And I am able to let Avery meet Anna and Elsa

I do have to move one ADR (Crystal Palace unfortunately is getting no love on this trip...keeps getting bumped). So that is my next task...
All in all, now that I know how the system works, I won't fret during future trip-planning. I just know that I shouldn't have an internal freak out moment if I am not able to get what I want. My plans through touringplans is simply going to be a guide more than anything. I know it won't be a minute by minute thing, but I figured I do need at least some sort of plan going in...otherwise I will definitely founder and miss out.
Now that fast passes are in place, I will be looking at some dining options for my counter service credits and figuring out if I want to reschedule that Crystal Palace ADR anywhere....