Need help

My first question is im interested in purchasing a Outer Orbits Metal halide system i have a 55 gal and the one im interested in is 560 watts 2 150 hqi 2 130 and 6 lunar lights will this be to intense lighting for 55 gallons? Im interested in keeping clams but also want zoas and soft corals. My second question is what is the best protein skimmer?My last question is does anyone own the sedona series stands i want to but dont know if i can fit my sumps in there, Is there a support in the back or is there lots of open space.
 
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