You should definately hit up Lake Louise and Sunshine. I went there in March 2007 and it was the best experience ever in my 18 years of being alive. Ha! You should also try to hit up Silver Star and/or Big White near Kelowna, BC, which is a few hours drive from Vancouver. My best friends are going there and apparently it is sick. In BC there are a bunch of really sweet ass hills, like Fernie, you can try that 1 too. I really hate you because I wish I could do that this winter break but I can't. In Quebec you should also hit up Mont Ste. Anne, it is a pretty good hill considering it is east coast and Jay Peak VT. is not far from MTL (Montreal). Make sure you go out at night in Montreal... Montreal is the best place ever.
PS - If I were you I would save the west for last