how are you measuring salinity? What is your ALK today? Calcium should be within 380 to 450. If you are reading 540 in calcium, I suspect a) your salinity is oversaturated (higher than 35 or 1.026 b) your kit is off c) your testing is off. If by chance those numbers are correct, they are not in a stable range for corals, for as the calcium precipitates, ALK will lower.
before you put corals in, I'd would be in the best interest of the animals & your pocket to have an experienced reefer verify those numbers,IMHO. It would be wise to read over those articles, but I believe I already answered your question before. If you are not supplementing calcium, ALK, & mag, and if your system isn't stable with parems that stay in range, I.e,ALK 2.5 to 4.0, calcium at 380 to 450, ph about 7.9 to 8.2, mag about 1250, trates below .5, phosphates below 0.024, adequate random flow, and adequate lighting, I can't recommend any stony coral in that tank. It might live a month or 2, but will most likely perish after that. I really can't add anymore than that. Good luck!