As for the mountain, depending on your ability there are many options. The big factor is how icy whiteface is. Often times parrons run and the other blues from the peak are pretty scratchy due to the wind. The fastest two lifts are the gondola, although during holiday weekends the lines ca be brutal and the face lift. If you want to go to the peak face lift is pretty nice. Cloudspin can be loads of fun if the snow is good and not too icy. I also love mountain run and thruway and parkway. Avoid the little whiteface lift, it is slow and often cold!!! It is better to ski to the base and catch the gondola. I like the mountain run lift because it never has lines even during vacation weekends. However, you have to be comfortable with blacks for that lift. Wilderness also has nice terrain. If you like bumps there is often a bump course that has been constructed by hand on mountain run. Upper Mckenzie also is rarely groomed so you're sure to find bumps there, however, beware they are often the iciest bumps you'll ever see. I'm not huge on the trees at whiteface, although I've yet to see the new terrain they added this season. The slides will most certainly not be open in february, so it's not worth worrying about it too much. It is worth eating boule's bistro (mid-mountain), not for the food, but to avoid lines. For cruising, the face lift is the best lift. You can rack up vertical and enjoy nice wide runs blue and green.
Again, the nice part about whiteface is that if it is too icy and too cold, you can find plenty of other things to do wintery that will keep you entertained.
Whiteface has been my family mountain since I was 9 so I'm going with 20 years experience. Have a great trip. BTW, if it rains it is worth skiing because the snow will be great on the mountain, that is if you don't mind getting wet.