Since I have only 80gb available, how about downloading to SD or flash drive. I could get a 7200 SSD, but I guess I would have a bottleneck with my i7 5400 HD. For my needs, I wouldn't think it necessary, but what do I know.
An external SSD works well for sample libraries..
Stay away from 7200 HD’s go for a real SSD
And only keep the programs on your main drive..