Let's be clear about one thing.
Randomly deleting stuff in your windows folders is going to kill your system.
Best thing I have for you is ccleaner. CCleaner - Download
Use the file cleaner, but NOT the registry scanner.
Typical size for a windows folder with win 7 is between about 18 and 24 gigs.
There's a lot of factors that determine that, and while you are at the top end of that, you are not into a realm where I think something is wrong.
As long as you have another drive you can completely remove the page file from the ssd btw. You just have to have a page file it doesn't have to be located on the boot drive.
Deleting old restore points may buy you back a gig or two from the windows folder as well.