The link at the bottom to the SLC guide works.
I recommend you stick to your plan and stay in PC. Ski two full and one half day in PC but get over to Alta or Snowbird for a full day, spend the dough. It is a whole nother world over there.
If it is a cold, snowy weather pattern the skiing in PC will be great, but you might be surprised how warm and sloppy it can be at that time of the year, esp on the bottom half of the mountain.
As mentioned, the expert skiing is much better at Alta/Bird and so is the snow quality, but there is PLENTY of good skiing in PC for a first SLC trip.
Get a cheap 2 wheel rental car, no matter what you do.
I'll be out there for my annual President week trip, which is just before the warmth can start rolling in.