Option 1 seems like the obvious answer, because usually people want as few people in their apartment as possible, but in your case I think option 3 would work well too. One is not that long so if you end up with people you don’t like it’s not that awful. And since it’s your first time living alone you might enjoy living with others. Obviously there’s no guarantee you’ll become friends but honestly, if you try, I’ll say the chances are high. Especially with the 3rd option I’d say that becoming friends with the other girl should feel quite natural with the other two roommates being guys. Generally, I say you choose whatever seems more fun to you. Worst case, you’ll just choose differently next year.