From personal experience of liking someone all my mates hated...
Gradually we started talking and grew really close. He was one of the very few people I learned to trust. He did tell me that I needed better mates, and that they werent worth having. Few months later came the question: 'Will you go out with me?' was over msn so not exactly ideal. Told him I wasnt sure (coz of my mates). Then he went off. Later that night his mate was talking to me telling me I should give him a chance he does truly like me not messing me around. (I didnt tell my mates anything about this coz of what they thought of him). Tried talking to him next day, and he told me where to go basically. Theres alot more that happened but anyway I really regret not taking that chance and risking it. To this day we don't speak. Last time we spoke properly was last February (as was around my birthday) and he moved away last summer.
But, the thing is, a few months after he'd asked me out, my mates stopped hating him. I couldve kicked myself for not taking that chance. And also, I kinda drifted away from that group of mates and into another group, as he was right, I did need better mates, as hard as it was to admit it to myself.
If I was you, I would take a chance with him, as when he moves away you dont wanna keep asking yourself 'What if?' like I did. Your mates may hate him now, but if they want you to be happy and can see you're happy with him, they'll stop hating him. Or will just stop hating him like mine did. I mean I dont agree with one of my mates choice of bf, but she's happy, I havent seen her this happy in ages, so I'm just glad she's got that now.
That probably dont help at all lol but I just think you may end up regretting it.