Im thinking you ought to wait on a PWC
until the tank has cycled unless you have ammonia off the charts.
T5 lighting is good for many types of coral, but I would advise you to NOT add xenias! They WILL take over and will release toxins into the water when you try to pull them out. They grow very quickly and overrun corals and clams. They REALLY like bright T5 bulbs!
If I did it again, id stay away from xenias and green star polyps.