Dan, there are a myriad of factors that determine whether or not your tank is ready. Can you post pictures of it and provide more information about what organisms you are keeping, what your water chemistry is like, and what sort of equipment you are using? Regardless, I think two months old is too soon for either species of shrimp. Coral banded shrimp are a lot "tougher" than cleaners in my experience.
Hope this helps,
Kevin