The download has been stuck at 2.5GB remaining for over 10 minutes. I have a 25-30Mb connection speed. Should I just wait to see if it finishes or start over?
With that fast a connection you might wait a little bit and see if it finishes and the downloader isn't reporting accurately. If it isn't done in 30 minutes or so close out and reopen, see if the downloader does anything differently. If neither works I think you should uninstall and reinstall from scratch.