That's a mighty fine canopy.
If memory serves me right then u know ur cobs..would u take a look at the budmaster ll cobx4 ...she's my choice to veg under hoping to get max growth so they can go straight into flowering would u mind taking a look? Shell be in a 3x3
http://www.budmaster.co.uk/COB-X-4.html
Looking at the unit alone it's one mighty fine light. Love the build quality nd attention to details. What bothers me is they are using 48 little "COBs" for a 200W unit which means they're running each individual little COB at 4.2W which takes us back to the 5w multiled units. Another downside of the build is those COBs are mounted to a multilayer MCPCB (Metal Core Printed Circuit Board). So knowing there are three layers there, one of them is dielectric layer which is an electrical and thermal insulator. This means you have a bottleneck in thermal management where it's ost critical and that is between emitter and the heatsink. Now I'm ot saying hos is gonna make your light crap on you like a mars ligh for example. All I'm saying is the light doesn't run as efficient as it should be. Another thing are those emitters themselves. I have no Idea what they are or how efficient they run. So I can't help you on that side but I'm guessing they aren't anywhere near the efficiency of a decent COB made by Cree, Bridgelux or Citizen. But you do get a mixed spectrum that is gonna provide you a bit higher PPFD.
So generally the light is gonna grow you bud, that's for sure. But if it's gonna perform like some other units avaliable on the market for the same price that I can't tell you.
Have you considered DIYing your light?
Or you could have a look at
theese. Same power but much lower price and probbably quite bettee efficiency .