I'm running a two "tent" perpetual grow at the moment DWC in SCROG. I lost the R (in RWDC) a few years ago when I found out it really didn't seem to make a difference and it added complexity not seemingly worth the effort. I added extra air stones and an independent 4 gang air pump to each bucket; THAT seemed to make a big difference.
I harvest one plant every month by rotating my buckets every 30 days (or so) and my yield varies greatly by strain and time vegged. That being said, it's always way more than I can smoke in a month.
This is my veg tent: From left to right, White Widow, Jack Herer and Blue Dream
This is like the Flintsones version of your set up lol
Here's the flower "tent" (AKA Downstairs shower) Cheese on the left and Sour Bubba on the right. Yes 5 strains in 5 buckets!
And here's my December Harvest
What's not shown is the cheap LED fixtures I use to flower: 2 300w Galaxy Hydro and one 2000w
BESTVA lamps. I don't like the heat issues that come with HID especially in the summer
Sorry to hijack but I know there are some people that need to keep it simple especially when growing multiple strains and or new to growing. Flushing one 5 gal bucket is a lot easier than flushing the whole 75 gal system when adding too much of....well anything lol
I don't profess to be an expert in any way but will be watching your grow closely and hope to learn a lot along the way.
Also get
Hydroguard...seriously get it.