i did something like that my first semester basically because i didn't know any better, and i nearly had a damn breakdown before even the first month was over
I did something similar and had to miss class a couple of times because of health issues. When i missed one day i missed six classes and had to make up all the assignments for each one + tests/quizzes.
I once had class from 10am-8pm every T/TH, but it was for 6 weeks (summer session schedule). On every other day in between, I'd have work for part-time. It's doable if you listen to Ariana and f f focus. I guess it helped that there wasn't too much going on in the campus in summer so I wasn't distracted as much as during the regular school year.
Yeah. I used to commute so I would pack two days out of the week with all my classes so I didn't have to drive to school every day.
It kind of wears you down, and managing your studying time if you have all your tests on one day is difficult, but if you have the endurance for it and are able to stay focused and on top of things, and aren't the type to get overwhelmed or stressed easy, it's possible.