Kenny,
I'm sorry you have to be going through this and that you have lost so much already. If I were you leave the tank and allow it to finish it's cycle. Since this was all sand from a previous tank it shouldn't take too long. However, it may take a few days for the levels to show you anything. I would cycle it for two weeks and check your levels. At that time I would do a 10% water change and make sure that nothing changes on you. How are you set up for cleaning? Do you have a skimmer and all that yet? If not than continue with a 10% water change each week. Start with the cheap stuff to make sure everything is cool. Add your cleanup crew in (little at a time if you like). Make sure that they survive before you add the fish. About the shrimp I have no idea. I only have a peppermint shrimp and he is pretty reef safe. Hope this helps.
Angie