I'm finally growing mine out -- working from shoulder length to 'arm pit length,' and I'd like to get to mid-back (at least). I think mid-back would be great.
Can i tell you that belly dancing is some serious stuff? Holy crap am I sore, and I've only done two lessons. With my pilates, yoga, and belly dance -- plus my postural patterning work in between (and trying to work my patterning with the other three), I am *sore* all the time now.
Also, i'm really psyched. I found a company that helps provide online lives streaming and broadcast classes -- basically, we can do a virtual studio. I can connect with my people in the US more easily, as well as my clients who have moved away from here (to auckland or christchurch). And, some of the people here with whom I work -- it'll be easier for me to provide for them. It's a really exciting development in the studio.