Other Suggestions -
#1 - Read everything here (Ask The Boot Guys). There is lots of good info and though the boot fitters are taking a summer break, some are still paying attention and might answer. There is enough info in their forum that many of your questions should be answered. You don't have to agree with everything. The important part is you know all the different views.
#2 - Go to get boots from a reputable boot fitter. Bring someone in the know with you if you aren't sure. You aren't buying running shoes. The only thing that fit/feel like ski boots are ski boots and if you've only been in rentals, you don't know what it should feel like yet. I learned the hard way and ended up buying another new pair of boots because I didn't do my research FIRST. I now love my boots and ski way better that I'm out of the first pair I bought.
# 3 - Buy boots that fit correctly, and are good boots. Don't get caught in the "these boots are good enough for how I ski" mistake. Get boots that fit perfect and can handle more of the mountain than you can. You'll grow into the boots performance quicker than you think and especially if they are properly fitted. Don't ever think that only experts need expert boots. That's crap.
#4 - Whatever else you get will be more beneficial to you because you are on properly fitting boots. You'll even like your goggles more because your feet don't hurt. OK. That's an exaggeration but not by much.
#5 - Take more lessons. I did an adult clinic last season and it was short money for what I got. Don't get me wrong, I still suck but I suck a lot less than I used to. The better the skiers are that you ski with, the better you'll start skiing.
#6 - Embrace this community and all that it brings. You have about 6-7 months to read all the forums here before ski season starts again.
Welcome and enjoy,