If you can find it, Shimpagne!!! What's wonderful about the MSFs is that they are pretty sheer, so you can use them alone or over blush or bronzer to intensify the color.
I am super pale too and I think that lightscapade is awesome! I just got mine the other day. Also, you may want to look into Porcelain Pink and Shimpagne because they are some of the lighter ones. Here's a link to a swatch of a few MSFs http://mac.larahill.com/swatch/displ...album=3&pos=11
Since these are not perm or current, you'll have to swap or buy them off someone, but there are a lot of good sellers in the Clearance Bin forum when you get enough posts to go there.
I'd say shimpagne, and porcelain pink - lightscapade is great for lighter skin, but I find that it often gives a white cast for people with a lot of yellow undertones in their skin