I agree,direct MH lighting would be idea.Just make sure you acclimate to that lighting slowly over the course of 3-4 weeks.Direct laminar(1-way) flow from a powerhead is never a good idea for most corals(a few aposymibiotic soft corals are the exception).The reef crest has surges,that type of flow is hard to duplicate.You can create strong oscillatory(back and forth) water flow in a tank that would be much better than a powerhead blasting.I generally don't recommend SQUIDS but in this case their switching outputs could be used as an altenative to a surge device.Make sure to get a strong,pressure rated pump as SQUIDS put alot of headpressure on pumps.Expect a 30% reduction in flow while useing one.Ocean Motion makes some water output switching devices that are superior to SQUIDS.They're a little $$$ but well worth the investment IMO.
http://www.oceansmotions.com/