You won't get much joy there, the people are committed to their miners.
you can move your own thread, think it's under options bottom left,either to beginners and help or to mining speculation.
https://bitcoinwisdom.com/bitcoin/calculator calculators abound and each will give a different answer.
looks like you get 'free' power. this will make a huge difference. be absolutely sure your dorm room has no fair use policy. and is safe. what if your miners get stolen?
you also need a big old power supply to run three of these, adding to your outlay. might be better to get 2 miners and a smaller ps. that thread would help with this, and other S3 threads.
there is always some debate when your question gets asked. why must you mine? you might not even break even, and you might be better off just buying coins now while they are cheap.
it is miles more important to learn about wallet security, business and politics than mining.