You can also add shrimp in this tank is they like the same water conditions. I have some chameleon like shrimp in the same tank as my dwarf crays and so far so good. I think you just don't want to overcrowd the tank floor with the crays.I put my dwarf crays in there.
Wow, so you have you shrimp coming in and are putting things together
Please keep us updated and take pictures when you are ready.Thanks.