PC lighting on a 55 gal

ok i got a 55 gallon tank and it came with a 48 inch coralife power compact lighting,it only holds 2 bulbs,now i am wondering if this is enough for corals,i am hoping to get some sps and lps corals.
if it is enough what kind of bulbs are going to be best? 6500k,50/50 or full actinic
if this is not enough will a 4 bulb system work? i believe this is a 55 watt per bulb system
 
ok so if i want to keep sps and lps could i use PCs if there are more bulbs?,i have a 250W MH but its only one bulb and i dont know if 250 is to big for a 55 gallon,i would be willing to trade for a 70 watt MH or a 150 watt MH or mabey a T5 setup,i have the 250 watt MH with a 14k hamilton bulb,includes moon beams,everything works
 
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