I did this on my Acer. I bought the laptop on sale for 600e. Then I got a 120 GB SSD for 160e and swapped it for the original HDD. Installing Windows and all the drivers from Acer wasn't a problem
Now I have a laptop that would be 1k plus in the store for 760e
I suggest you check Toshiba's support site for the drivers before proceding. If they're there, great... if not, you need to carefully consider your next course of action.