Thanks for your awesomely detailed response! The driver I am looking at now is the
HLG-185H-C500D, which will run to 200w. Now that I think about it though, running the lights on 60w seems like I would be better to go for another driver, and run two lamps on each. giving me four lights running at 100w.
I may have to go for individual heat sinks, and join them to a metal rail - I had a look into a custom job, and neither my wallet nor my wife allow for it. In which case, its all fairly straight forward.
This is the first time I have thought about building a circuit since my high school days playing with breadboards in the school lab. I have to say, the internet is amazing, but I miss my old teacher, he would have been awesome at this. My plan is turning this way, two CXB3590 in serial attached to a 200w (
HLG-185H-C500D) driver, and individually fixed onto a 120mm heatsink and fan. The four heatsinks will all be fixed to two parallel metal beams, and hung from the top of the closet under the extraction vent. Drivers will be cable tied to the support beams I guess. I would also be able to run a second fan over the whole apparatus as I have plenty of power outputs nearby and electricity here is pretty inexpensive. The closet ambient temp varies in summer from 20-30 degrees, its in an air conditioned room, but has an outside wall, which warms it up.
The next thing I have to consider is the grow medium. I'm fairly sold on soil for that, as the size of the grow makes it pretty pointless to shell out on hydro. I'm thinking one plant, max two. I live in a country where most specific cannabis nutrients are very expensive, so I guess I will be going down the route of good soil, and as few nutrients as possible.
Once again thanks!