I have a lot of stuff installed that I never use...
Get rid of it. This is the perfect opportunity to clean house. No mercy. If you don't use it, get it away from your working computer and it's rgistry. The more software you have, the more potential weird problems from interactions and incompatibilities. Worse comes to worse, put that stuff on a zip drive (and label it).
Dual booting... yes. It'll defeat the purpose. keep the other OS somewhere else or on a different machine.
Look at the articles, Jim. Also, look at this. Ed Bott really knows his stuff.
http://www.zdnet.com/blog/bott/windows-7-and-ssds-setup-secrets-and-tune-up-tweaks/2910