how many plants are you gonna be growing?
for 6,000w system I'm guessing over 100 plants, setting up 100 dwc buckets or totes is a lot of work, especially if you have to seal them all so you can use a feeder and automate it that is just going to be difficult, but possible.
you are looking at a big system, you will need access to the main water line and a nice large water pump/air pump.
I think you might be best doing NFT using gutters, fenceposts, or larger PVC piping w/ 3" or so netcups. Set up the gutters in such a way that you pump solution into them on one end and it runs through everywhere and our back into the reservoir, which should be aerated with an air pump. run the water pump periodically, like 5 minutes every half hour, for which you need a hydroponic timer.
