I know me too, its such a confusing thing to decide! Especially because you want to look good and dont want to be left thinking should I have gone bigger or smaller?? They should generate a computer image of us with the different sizes so we could decide that way lol. If they are offering you 650 i think you should go forit, they obviously think you can carry it off or else they wouldnt have offered such a big size, go for it hun!! :o) x