Notebook SSD Question

Hey all,
 
I have a notebook with a 160 GB drive.  The machine is very well kept, has a DAW on it, plus an appreciable amount of sample libraries (for what I use), and I'm still only using less than half of the drive.  I know the general consensus is to have the OS drive, then sample drives, and possibly an audio drive.  Since I'm using the space efficiently, I'm tossing around the idea of just getting a larger SSD drive and keeping everything on that.  Comments...things I'm missing?
 
Thanks,
 
Donny