Re long legs, I really had to get used to the different look that long legs give in a belly dance costume compared to shorter legged dancers. It looked like my body was way too short (my legs are about twice the lenght of my body) I guess it was because none of the other dancers had long legs so I had some sort of default look of a body in a costume in my head and mine didn't look like that and it seemed weird. Once I saw other peopled ding who were similar it was not so strange anymore to me. But it's still rare to see a dancers with long legs. I haven't encountered problems in dancing technique itself from having long legs. My problems are more from hypermobility, it makes it easier to learn belly dance, but at the other hand it's also easier to injure and some nice crisp movements aren't possible.