Thank you so much!Give that Chalice a nice corner to sleep in away from most corals. If/when it decides to take off it will go after corals.
Hammer, torch, and Galaxea will need some space around them, they like decent flow but not direct - too much and they'll stay retracted and start to recede, not enough and they'll droop.
I believe the Candy Canes MAY be able to be with each other but I'm not positive.
Dragon soul is a good one for a small rock on the sand bed. BEAUTIFUL coral when it's colored up.
Duncan's about halfway up the rockwork usually. Medium flow, usually indirect again.
Ricordea will walk until it finds where it wants to be, I usually put them near the sandbed - half on the sand, half in the rock.
Pipe Organ - no clue, sorry?
Monti, I'd say 2"-3" from the top of the rock - give it room to encrust upwards for those nice spirals you see in mature tanks. They WILL block the light of any corals under them so choose wisely.