Clams and anemones, with the exception of a condy anemone perhaps, need intense lights. I'd go with the halide as mentioned if you wanted clams or any other sort of anemone. As far as your current lighting, what are the wattages of the bulbs? Even softies will need decent lighting, which could be provided by a smaller power compact setup, as kribbz mentioned. Tastes change over time, I didn't like the acroporas when I first looked at them, but not only 6 months later, I think they're cool in their own right. If you go with a halide, you won't have to upgrade, and if you ever move to a larger tank, you can use the halide in that setup as well. So, were it me, I'd get the halide so I wouldn't be restricting myself.
Example: on my 125g, I'm gonna start with softies, but I have the setup arranged for 3x250w halides and 4x96w PCs. Softies don't need that much, but I really dig clams and if I ever want acropora, I can probably have them. HTH
125 gallon saltwater: 55gal sump, 4 Blue-Green Chromis, Purple Tang, True Perc, Firefish, Royal Gramma, 5 Ricordea, Bubble Coral, 15 Pulsing Xenia, Green Star Polyps, Deresa clam, Green-Tip Torch Coral (about 11 "heads"!), Orange Montipora Cap, Purple M. Digitata, Green Slimer Acro. Yongei, 3 Orange M. Digitata, Pink&Green Acro. Millepora