Simple Upgrade from 2.2 to 2.4

I have poked around on the forums and moodle docs a bit, but was not able to answer my question.  Perhaps someone here can either answer it or point me in the right direction.  Here is the question.

Would deleting moodle 2.2 completely from my website, installing a fresh copy of moodle 2.4, and then restoring the only two existing and small courses from backups.  Would this be a quick and simple way to upgrade, considering their are only two small courses hosted on my site.  

I have only 90 users total.