I'd be on the look out for the cause of the ammonia. Everything else look sokay (salinity is a bit lower than I run-1.026, but I used to run at 1.021). The WC should help some on the ammonia, but be on the look out for what is causing the ammonia. I'd check Alk/dKH, too. IMO, it is the most important, most forgotten killer in a set up tank (have to exclude special causes and uncycled tanks).