Obligatory
Go See a Bootfitter. Seriously, finding a boot that works for your foot shape (not just size), height, leg strength, ability, type of skiing, ankle mobility, budget, and a million other other factors that im forgetting is something only a reputable, in person bootfitter can do. You may have better luck asking here what are some good bootfitters in your area. Where are you located?
If you dont have a shop anywhere close and you
must buy boots online- there is no such thing as a specific "park boot". Whatever downhill boot fits your foot the best will allow you to rip powder, park, all mountain, etc. Make sure when buying on your own, you read this thread on
how to buy boots. There is also a wealth of knowledge from legit bootfitters in that thread. Another option if youre far away from a shop is to schedule a bootfitting appointment next time youre in a major city/out west at all. You have plenty of time
As far as bindings go, its pretty hard to go wrong as long as you get a modern downhill binding within your din range. For your height/weight/ability, i would put some Tyrolia Attack 13s with a 95mm Brake Width on. Especially if you see yourself getting new boots at all in the future, Attacks are nice because they adjust to different boot sizes WAY more than Pivots do. Even the non-demo attacks, which is what i would recommend. So if your foot grows in the next 2 years, you may have to redrill if you get pivots.