Replying to Buying Everything New

hi, I've been looking around for skis but I'm pretty new to skiing so I don't know much about what's good and what's bad. I need new boots, bindings, and skis for next year. I'm am 14, 5'5, and 130 pounds. My boot size is 27.5 but that's probably going to change by next year so if possible could you direct me to the right pair or brand of boots? I ski in the terrain park mostly but I do ski whole mountain on occasion. My location is New Hampshire so it's light powder/hard packed trails. My budget for everything is $650-700 if that's enough? Like I said I'm pretty new to this so I don't know what brand is best but for sure I need them to be twin tips :)