There are a few guides I found helpful to squeezing space out of your SSD
Tweaks:
http://www.tomshardware.com/reviews/...weak,2911.html
Using a secondary drive for User folders:
How to: Setup SSD boot drive with secondary Hard disc optimization
I'm using a 60GB SSD as a boot drive, and those 2 guides really helped squeeze a load of space, I believe after installing windows and following the guides I had only used about 16-18GB, not exactly sure how much.