Replying to Jackson hole

I know there's a million of these threads but here goes.

So im going to be taking a trip to Jackson/Targhee in early january. I was wondering what kind of terrain at jackson hole will be open(I know they're getting dumped on now)? is that too soon for the good stuff to be open at Jackson? I guess what im really asking is how much base is required for most of the advanced stuff to be open at Jackson? Also any info about Powder stashes, sick runs, or Good restaurants in town or Teton village would be appreciated.