The hard drive you selected will also work with your computer.
If you download a trial version of MS Office, it will only work for 60 Days. You can purchase MS Office for a little over $100 or if you do not necessarily need all of the functionality provided by MS Office, you could use Google Docs or Open Office
. Both of which are free to use. There will be a significant speed boost after you add the Solid State Drive to your system, so if you weren't experiencing slow performance or any other issues prior to your computer crashing there's no need to upgrade. Unless of course spending $300+ on a hard drive, $100+ on an OS, and $100+ on Office products is just too much to swallow.
Computers can be purchased rather inexpensively these days, that is if you don't have a problem moving away from Sony products.
Personally, I would spend the money to maximize the performance of this system and salvage a few more years use. You can max out the RAM
easy enough and without much cost, if you so choose.
I hope this helps. Let me know if you need any additional information.