TigerIssey
Queen TI
If you get halides with electronic ballasts they are pretty efficient. A pair of 150's over a 4' tank would be fine for softies and lps, then probably some sps up at the top. That will run at just over the 300W So its not as bad as you think. You could easily use 300W worth of tubes above that tank.
Do these run hot, would they affect the temperature in the tank and need fans to cool them? Otherwise I will have a look at them. That sounds good for the types of corals I could keep anyway.