Wow that’s one hell of a stealth grow room. I made it easy on myself and became a hermit and don’t have to worry about stealth inside the house anymore.
That is an impressive array of toys you have there. I usually recommend people start out a little simpler but if you plan on doing it for a while and have the money, then go for it.
Now if you can just get your temps under control because from what I’m seeing that is going to be your major issue once those girls get a little bigger. Right now they are just babies loving the warmth and humidity, soon they won’t be as forgiving. Some summers I have to shut my basement grow down because of the heat. I refuse to fight with 90°F+ anymore. I move it all to an upstairs bedroom where I have an air conditioning unit to help keep the temps in check.
Huge recommendation on your lights, look at COBs. I am running @BigSm0’s AutoCOBs and am amazed at how much cooler my tents are with these lights. These run cooler than my LEDs did so I’m sure they would improve your situation with that 600 watt. My 4 lights run at a total of 220watts and I believe they produce more efficient light than your 600 watt and most certainly run cooler. I would replace that thing with 4 of these and your groom would be golden, well actually bright white.
These are some bright lights.
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Here’s a slap for an amazing stealth groom