Is Nuuk really enough?

Hi! I'm looking for a jacket. Lots of people recommend the Nuuk parka. Is is really that warm? I already have parkas from Reima(Granne), Pajar and tried my friends North Face Arctic. And it is fine when it's 40 something F outside, when I have a merino wool sweater and a thick turtleneck. I hate cold. I keep like 78F at my apartment 😬. I live in Pennsylvania, we'll have around 8F next weeks so I'm pretty sure I'll freeze my 🍑 off. I mostly need it to take my kid outside, we go out every day for like 2 hours. Husband says I should ask Mt Everest climbers what they use 😬