I've got a 10 gallon cycling right now. I was planning on my 75 being my first saltwater setup but I don't quite have the cash to get it going right now and I am way to damn impatient to wait to start saltwater. Anyways my friend has a 10gallon saltwater right now. He's got about 20 lbs of live rock. His current inhabitents include a large anenome, no idea what it is, a purple firefish, a True P. Clown, and a six line wrasse. The tank is beyond beautiful. The problem for him now is that the anenome is outgrowing the tank, it takes up about half right now. So that's something to watch out for. You might want to try a little bit bigger than a 10, maybe a 20 or a 20Long. You can usually pick up 30gallon tanks for about $50. Ebay!
Regards,
Ken