hmm, i had capilene 2 and MH Tenacity G-Tex XCR for all of it except summit day. Summit day I had teh cap 2 and fleece pants underneath the MH Tenacity pants. No insulated pants whatsoever. And yes, I have been in some pretty bad weather there. At the lower elevations I was wishing I had sofshell pants only.
You need to know whether you generate heat or whether you tend to get cold. What I used may be inadequate for others and too much for somebody else.