The bigger the rooms, the more exhaust fans/air exchange/heating and A/C you need. That why most have suggested doing your cuts/mommas and vegging all in one veg room. Personally, I'd keep my transplanting to a minimum. I can see jumping from smaller pot to bigger pot....if you dont have room to house 10-15 vegging plants in 5 gal buckets. But you do have the room so just start them off in solo cups as cuts, then transplant right into the pots they will flower in. Veg them in the same pots they will be flowered in and just move them to the flower room when ready.
Seems like you have a solid idea on how to run a perpetual.
Mommas:cut clones:roots clones for 7-14 days in solo cups:transplant to flowering pots:veg for 4 weeks:move pots to flower room.
In this time, you are running another set of cuts to be run through the process described and another set into the flower room 4 weeks later. 4 week perpetual grow that gives you x amount of plants ready for harvest every 4 weeks.
The new/novice grower should be able to achieve about 1/2 a gram per watt of lighting used. If you use (6) 1000W HPS lights in your flower room that equates to about 3000 grams for the room total (approx 3 lbs) every 4 weeks. Are you seeing where you would need to be at with equipment,electricity, and man power to achieve 20lbs a month now?
Heres a quick mach up of a room set up for a perpetual every 4 weeks.
View attachment 4034378
When you move the plants from the veg room to the flower room, you will fill a row every 4 weeks so the 2 rows in flower room will be staggered apart by 4 weeks so you can get on course to yield every 4 weeks per row. As soon as you pull a row, the next set of plants that have been vegging for the past 4 weeks can go into the empty row in the flower room. You will need to be on top of cutting from the momma and getting them rooted and vegging to keep up with the 4 week rotation of the flowering cycles. Sounds easy on paper, but it can be a task -certainly for someone new at it.
Another thing to think about is if you plan to run say 10 potted plants per row, then you will need 40+ pots total for the whole gig if using reusable pots.
-10 pots in veg under the MH lights
-10 pots for flower row 1
-10 pots for flower row 2
-10 pots that are in reserve to transplant from rooted clone to veg while one of the flowering rows is being harvested. That way you can be starting a new row of flower while harvesting the last row of flower you just took out and not be waiting on the pots that they are currently in.
Plus 1 pot for every momma.
It would take pages upon pages of me writing info to get you "kinda prepared" for a setup like this.
Thats why we have been urging you to start off small and get in your groove before doing something on a scale like this.