Sorry bro you're in a really tough spot. You're nearly always going to be in a suboptimal state for training, body composition, and overall health. Such is the problem with college! I know all about it, I'm taking a semester off from University right now after a long break in Ireland for the summer and I feel so much better physically and mentally. There's no way to avoid it though, it's life.
I reccomend taking lifting less seriously for the duration of your studies, it's very easy for your heart rate, horomone levels, and everything to get out of whack with the added heavy stress. I reccomend you do very little heavy drinking as hangovers are going to augment an all around poor state physically and mentally.
You should consider buying a White Noise Machine to promote a restful sleep. They're like 40 bucks on amazon.com, and you can probably find even better deals! Chances are that you have a lot of electronics going in your room - shut down all the power at the powerstrip going to your computer + peripherals every night, a while before going to bed. These measures will do a lot to promote restful sleep and make you feel better. Maybe you'll feel like getting in an extra session of lifting here and there - but try not to prioritize the lifting too highly with all you have on your plate.
Also, the nutritive quality of your cafe food, and generally everything located on campus, is going to be abysmal. Don't bulk up on that shit!!