I am a grad student and still in college, but graduated a couple years ago with my bachelors. You 100% should go, as stated above, you will likely never have more free time or ability to go. A week or two won't kill you, and with how things are looking right now there is a good chance classes will be online anyway (or have an online option), so if needed you could run to town to tune in for the class. Some of my greatest memories in my limited life experience revolve around hunting and doing crazy sh*t related to go hunting, only possible because I had the freedom and free time of college.
As far as states with OTC rifle, Idaho and Nebraska both have them, of the two for mule deer Idaho is by far the better option for public land. I would go the preference point route for an easy draw state/unit though personally, MT, some units in CO (not sure if you can still get a point for CO), some in WY.
Get out there and have fun!