It's a matter of degree, obviously. Totally selfish people are going to be pretty evil. Moderately selfish people might, on the whole, balance out as good.

Extreme 'Chaotic' people instinctively rebel against rules, customs, regulations and co-operation. I can see why this might be seen as selfish, but I don't think it's a defining trait - more of a byproduct of their individuality.

Additionally, I think 'Very Selfish' and 'Strong Moral Code' cannot sensibly coexist, whereas there's plenty of Selfish Lawfuls around - ambulance chasers, for one ;-)