I keep zoas under PC lights, so overall it is not a problem.
However your lighting depends on your tank size. What size tank do you have? If it is a 55 or larger, then I think your lighting is too low for zoas (actually, too low for most anything except mushrooms). But if you have this on a 20 gallon, then yes, I think you would be OK.
Also important for zoas (IMHO) is flow...so make sure you have enough circulation...for softies I would guess around 10x tank volume per hour would be ok.
HTH
Stewart