First of all love your pics and the tank!!!! Since you took every thing out of the ocean you do not have to cycle the tank. The sand is already live and the water is fine. Only thing is make sure you get the local ocean water readings so you know what kind of water you have to mix up later.
I have found that there is quite a bit of water difference in the local ocean waters. For example the water in Stanly Park will be different from Wite Rock. Try to get your tank mates from one location then it would be eassier for them to live together and also the water issue should be solved.
You should try some Ananos they are cool to watch. I found Stanly park is a good place to colect them. Hermit Crabs can be found at Wite Rock when the ties goes out and good place to look for them is on the sea weeds. The snails are also good for cleaning.
Good luck with your tank!!!
