150 watts of VHO over a 29 is more than enough light for soft corals IMO. I have a 55 and prior to buying the icecap 660 had just about 200watts of light and had no problem with softies. IMO you could also get away with some lower light LPS. Finger leathers, colts, mushrooms and polyps (yellow, green star, button) will do fine under that lighting. How deep is your tank?