Hey Lefty, Since this is your first crop, you'll have lots of problems that all first timers have. It really would be best if you learned step by step while doing it.
I would strongly advise using only one room to start with.
You can learn how to germinate seeds, plant them, grow the seedlings and transplant them into your hydroponic system for vegetative growing and then switching to flowering until harvest.
This can all be done in the one room as a learning crop to familiarize you with how weed grows and the pitfalls you'll run into. After your first crop, you'll be ready to expand the operation into a three room, continuous cropping environment easily without fear of screwing up a whole lot of plants.
You'll need to ventilate the room very well. For the actual construction of the air supply and exhaust system with a odor filtering system if you need one and the routing and wiring of the electrical supply, I'd suggest using one of the best people for all of that on the group. It's a really cool guy named "Mutt" on this group. There is nothing about the building of the room that he can't help you with to make it a professional and safe grow room that has the right temperatures and air movement.
Then, after the room is built, the supply and exhaust fans working, the filtering system in place, you'll be ready to install the hydroponics and start a grow.
During all this construction, you'll have ample time to order the parts you need online and buy the rest at your local Walmart and Home Depot.
The Mr. Green Video would be an excellent film for you to watch several times. His ebb and flow unit is different from mine as you'll notice in my description. Also, the grow guide you've bought should be read cover to cover. These can be done while you build the first room and construct the hydroponic system. Great cool down information after pounding nails!
You have 16 x 7. The 4 unit hydro system will use a footprint of 6 feet by 4 minimum for the flowering and vegging rooms and the final 4 feet can be used as your Mothers and clones room. I would suggest having a seperate door for each room. That's an inside measurement not counting on wall thickness. The rooms need to be completely light tight. Not one speck of light can enter or leave them. This is important for several reasons we can discuss later.
When all three rooms are going, you'll have the Mothers room with plants in dirt or hydro. That would depend on your preference. Hydro Mommas put out serious clones. Lots of em. When the clones aren't needed, you'll have to keep the plant trimmed to prevent it from getting too large. That will be room number 3.
Room number 2 will be your future alternating vegetative/flowering room as will room 1 when both are in use.
For the first crop, room one will do for both vegging and flowering. You don't want to get ahead of your own capabilities.
I'll start a list of the parts you'll need to purchase. If you go to the DIY area and study the description of the hydro units, you'll get a real good idea of how this thing works. Then I can help you with the parts you don't understand.
Is this all cool with you, or would you prefer to go another way?
I kind of skipped back and forth in this post, adding stuff, so if it reads a little disjointed, forgive me. It's also way past my bedtime. I'm going to hit the sack now and we'll continue tomorrow.
Maybe Mutt will see this and jump in with some advice for your air and filtering system construction.
