WELCOME TO AQUARIUM ADVICE!!!
just a few things...
garf.org recomends .5 inch glass for that size tank.. that would be about 12.7 mm.
a seaclone 150 is very undersized for a 150 gallon tank.. I would recomend looking into a DIY
protein skimmer (one suffecent enough for that size tank would be pricy)
a good skimmer, LR
+baserock), sand, 15-20 total cycles per hour of water flow and possibly the addition of a refugium is what is recomended for SW
low light coarls.. such as mushrooms and softys usually need at least 3-4 watts per gallon.. high light coarls need 6 watts per gallon + of lighting.. MH
has it own set of rules if your intrested in setting that up....