Well, you're going up on Saturday just like I am. I'm taking a mid (GoLite SL3.) I have never set it up in the snow.
That said, having set it up previously, they're pretty stupid-simple. Stake out 1-2 points, raise the center post, hold tension while you stake out the rest ... then just tighten/adjust as needed .. just gotta let the stakes set before tensioning.
Of the two tents you posted either one should work. It's going to be stupid-cold but not much snowfall to worry about for loading, so you may want to forego the mesh/mid and go double-wall.
I believe that there is enough snow for a snow-cave/quinzee, which will be warmer than anything else. (I've never built one, so we'll see ... will have the SL3 set up long before I try. :)
Weather forecasts generally show between 5-6F at night, with one site giving -2F at 4am. A snowcave/quinzee is supposed to keep you right around 32F ... a huge difference. We'll see if we get up there in time to play around and have time for it to set. :)