How well does the all wheel drive do in the snow

and how bad is the blind spot in the back

It does just fine as long as you're smart about it. No amount of Technology is going to make up for human error. Like trying to drive 40 MPH down a steep Hill with a Stop Sign at the Bottom.

Having all 4 wheels getting power is a always good. It will help. But don't think you are invincible.

It's not that bad. You just need to use your Mirrors and pay attention.