You'll be fine. Im sporting some 170s and I'm about 5'5ish maybe 5'6. I was 5'0 at the start of last season and was put on 150s for my first park year. If you are a decent skier you'll be fine
Exactly. I had a women boot the year before and switched to Full tilts party because they are fairly light and they were a lot heavier than the women. I thought they wouldn't work but about a week or so I adjusted and now they seem lighter than the women boots I was skiing.