Well, you haven't done much settings or manage your files (yet).
If installing the system goes ok and fast enough, perhaps you can try to reinstall it and even try the Zorin Lite version as Aravisian suggested.
I really, don't think you should give up that soon, this can be solved.
Zorin is a great distro even for Mac books, there are posts of user how are very positive after installing an using it. A recent post is this one.