Yeah, I run my Ca ~420 and I still get real good growth from my SPS, also your alk is high as well, which leaves little margin for error when it comes to alk burn.
AFA chalice growth it really depends on the species/genus, the true chalice (Echinopora) scrolls, hence the name chalice. The others, Mycedium, Oxypora, Echinophyllia etc. tend to encrust, I have also seen encrusting/branching Echinophyllia before, the brancing alien eye that Matt used to sell comes to mind as well as the Darth Maul.