you really, really need to talk to your roommates about it before you move in. its okay to call things, but you would be a horrible roommate to take things without properly discussing it. you're going to be living with them all year! i had a triple my first semester last year and it wasn't terrible, but it definitely would have been worse if we hadn't all worked together to make it the best possible situation. honestly, it will give a horrible first impression and i know you're a perfectly nice girl that shouldn't come off as a bitch to start with.
I know doing that won’t be the best way to start a relationship with my roommates but I want to be comfortable in my living space more than I want to be nice. I understand how selfish I sound but I don’t want to be stuck in a bunk bed or without a closet for a whole year. I move in a few days before the other girls so it won’t be that outrageous for me to take the good bed and a closet. I plan to offer sharing the closet with the third roommate.