That is the high end way to go certainly, but if you know what you are doing, the cost and weight will decline considerably. Instead of the expensive tent, fabricate a snow cave, which is both cheaper and more suitable, at least based on my limited near-Arctic experience. Same goes for the rest of the gear...

A lot depends upon what we mean by "survival," specifically the degree of discomfort that is tolerable. And, again, ambient conditions are all important.