Backtothere :
I have a Samsung 840 120gb SSD, a 1TB Barracuda HDD and Windows 8.1
You can actually put quite a lot of applications on that 120GB drive.
I have a 128GB Kingston. Win 8 Pro, Office 2013, Adobe Lightroom, Corel VideoStudio, PaintShop Pro, etc, etc, etc
Approx 50GB used space. Applications generally don't take all that much room. 1 or 2 GB maybe.
OS and just about ALL my applications on it. Games, movies, etc live elsewhere.
What you want on the HDD is very large things. Games, movies, etc.
See this tutorial for managing space with that SSD:
http://www.tomshardware.com/faq/id-1834397/ssd-redirecting-static-files.html