If you could, pull out some of those CB rock out and smell it. If it smell ocean fresh, it should be cured. If it smell like rotton egg, it's still curing. I find that if you smell LR close to the DSB, most of the time, it smell rotton no matter how long it's been in the tank. If the LR smell rotton, there should be enough bacteria in the tank for it to cycle itself. If you want to speed up the cycling process, you can try what Jim is suggesting.
Look at all those live rocks on the beach at Florida's state park!