Flow is easy, if they open up(probably like you saw them at the LFS) and extend, your flow is fine. If they stay closed up for more then 2 or so days, move them around. I typically start with any coral on my sand bed in the front of my tank, so not only can I keep an eye on it, but it gets acclimated to my tank and lights. Low flow, low light is typically how Zoas like it, although some of my zoas like low flow and high light, go figure...
Healthy pet center in troy? My mom lives in clifton park and I go there once in a while. If you are in the capitol region, go check out Eddies Aquarium in Latham, best LFS in the area IMO.