Nah, if you're looking for a long-term relationship, go for personality. Screw the looks, if you really love the girl you won't care about her looks. Still, I'm not saying you to get the ugliest bitch ever, just go for the more interesting one.
No I wouldn't either. But something like 9 months ago I had to choose between the ultra hawt looking girl and a cute one who made me feel awesome. I went for the second one and I've been with her for 6 beautiful months. Then I broke up and so, blah blah it dm. I've never regret the fact that I've gone for the uglier one (don't get me wrong, she's also good looking, but te first one was twice her).