ski resort suggestions wanted please

Hi All:

Since I am very susceptible to altitude sickness I am hoping that
someone could give me some suggestions for ski destinations with the
following criteria:
1) Located in the western US, preferably no further north than Northern
California.
2) Base camp no highter than 8,500 feet.
3) Easy access to hot springs, warm swimming pools.

I tried looking in several web sites for this information but none
seemed to offer criterion #2 as a search option. Is there any such web
site?

Of course, I know that altitiude sickness goes away in 3 to 4 days but
I dont have more than 3 to 4 days for a ski vacation :-(


thanks very much in advance
Quark