Hmmm, are you sure it's a wise idea to get a burm if the rest of the people you live with are terrified of snakes? Have you talked it over with them? Most of the burms I've worked with were rescues that needed to be kept for a while until they could be rehomed, due to their size it can be very difficult to find new homes for them. It'd be a shame to get a snake that you could only keep for a while before your room mates threatened to lynch you.
Don't get me wrong, burms are great snakes and have an amazing look, but you might want to do a bit more research before making a final decision.