Cmor1701d is right about needing a food source in the tank while it is cycling. With a tank that size you are going to want some fish it it. I stopped using phyto in my tanks. It caused more problems then I saw benefits. The coral (SPS
) are going to get what they need from light and the elements in the water. That is why frequent PWCs are a must with a large coral load. Eventually you will need to supplement with Magnesium Calcium and a few other things. Those things come later in the life of your tank.
I would be interested in reading about or talking to the person that has a 30g tank set up the way you described.
And BTW the larger your fuge happier you and your tank will be! I have a 20g fuge on my 72g and it is only that size because I couldn't fit a larger one in the space I have available. If I could have I would have used my other 55g tank as my fuge.