Looking for THE WARMEST winter parka

Looking for THE WARMEST Winter parka / winter coat recommendations for extreme cold / always cold, 5'2" woman. I've got short arms and short legs so I find a lot of regular sized jackets don't fit right. I also spend A LOT of time outside as I live in NYC, and have a dog.

My current jacket is the Trillium Parka *Fusion Fit* from Canada Goose but I want something even longer and EVEN warmer. I was planning on getting the Canada Goose Mystique Parka Fusion Fit, but I'm hoping for something less than $1,000.

For Reference:
Trillium is Level 4 - Rated for 5°F to -13°F
Mystique is Level 5 - Rated for -22°F & Below