You'll definitely want more live rock. With the live rock that you have, most likely there are a few copepods that came in with it. If you let the tank continue on for another 10 months with a significant amount more live rock, you should be able to do it. I would say you probably need at least another 50 lbs, but would benefit from another 100. If you don't add any life until the one year mark, you will have a large population of pods. If you are adding other fish, they will likely all eat some pods, but some are known for eating more than others, so definitely steer clear of those. The size tank you have is considered by most a minimum for mandarins after a year of pod development. Some have been able to do it in smaller tanks, but only by training to frozen. I did a lot of research on these guys when I wanted one, and decided to wait until I have a larger, more established tank.