I've done some checking myself also "diebog"
i see you can upgrade the dvd to a blu ray.
and you ram upgrade to pc3 12800 ( 2 sticks of ram 4gb.) total 8 gb.
as for your hard drive there right about the ssd being much faster. And the size you need is a 2.5"
the ssd can be a 128gb. to a 512gb...