Keys gave you good advice in #2 above.
HS may run on a MacBook Pro with a platter-based hard drive.
But from the viewpoint of the user (you)... it may seem like the OS is "walking" instead of "running"...!
Solution:
Put an SSD into it.
Cheap and easy. Go to ifixit.com to see what's involved.
Anyone can do it. If I did it, you can too.