Glad I could be of some limited help. As far as your services, personally I'd leave them alone. Windows 7 is doing a much, much better job handling them than Vista or XP ever did. A lot of the Forum experts (people who carry the Microsoft MVP tags because of their expertise) all recommend leaving services alone.
Having said that, if you like to experiment and test things . . .
I would definitely, positively, absolutely NOT rely on restore points when it comes to service tweaks. I would go with a full blown system image. That's the only way you can be sure that your computer will be restored to it's pre-tweaking condition.