I'm not trying to throw a wrench into your plans but if you're after the best g/w ratio consider donuts around a single light and make however many you wanna run lights for. I can't help but mention d9s ppks whenever I see someone setting up a new room.
I'm still kicking and I will return with a muddafuckin' vengeance.
Believe that.
Sorry I'm late Anti
Get this thing cookin' and kick life in it's fat fuckin' face
Such violence towards life..tssk tssk
:Some of us get sick of the constant beat down...so when life isn't looking, we get up and start hitting back.
If you did do these new racks it may be helpful to have some thing to keep the buds from falling down. Maybe two pipes on each level and a wire running across from pipe to pipe so that the plants rest on the wire. If this works it would keep the plant up and not block a lot of your light. It will also save you time by making it so you don't have to tie up each plant. Instead you just place them on top of the wire when they get long enough. Just a thought.