With this kind of snow I'd recommend Rabbit Ears pass lots. Pretty huge lots there now, but a lot of people too now, even during the week. Still, shouldn't have any trouble even with a big rig. The lots are pretty well plowed and they are close to a well maintained highway and you don't have to trail ride to the goods. Ride right out of the lot at 9500' and never make it anywhere near Buff Pass. No need to with the snow we're getting, and a guide isn't really necessary, since you don't need to get far from the trail for great snow. Just make sure to have a GPS/Map and pay attention to where your at.
The Buff lots (either side of the pass) are pretty small and start at around 8000' so you pretty much have to ride trail to the top. Also, in a big storm like this the Grizzly Creek lot, near Walden, can go a while before the plow gets in there, so things can get pretty interesting! 8' drifts over the road in a few hours between you and town kind of interesting. Have fun, doesn't get much better than this. 5' of base and 5' of pow