room in a room venting 4000w

I have a pandafilm 10x12 room inside a 15x20 room with plenty of AC to cool 4000 watts. I know this because I ran the 4000w without a room in a room with no problem and didnt vent the hoods.

I have 8" Blazer vented hoods.

The main room has ceiling tiles with an 8foot tall attic area or whatever you call the area above the ceiling tiles.

I have a massive max-can to exchange air in the panda room.

But since this area is more enclosed and sealed then Ive run before Im thinking I should go ahead and vent the hoods.

1. So do I exchange air out of the room through the 4 lights? (adds work to the AC)
2. vent the lights from and back to the attic? (recirculating hot air through the lamps?)
3. pull air from the main room (cooler) and vent to the attic? (wasting AC but not a huge concern)
4. run them unvented and just exchange more air(way less bullshit venting and hoses everywhere)

IMHO I would Loop the attic air thru the hoods it may be hot air but not near as hot as the air in the light hood.
Sounds like an Awesome setup!
a drop ceiling makes it easy, just take down the 2 tiles you wish to pass thru and install the collars.
Put the tiles back up and hook the ducts to the collars and to the hoods inline then to your fan then back up into attic.
That's all me If I was so lucky to have a grow like yours!!
In My Dreams!

thanks man. It's not my dream setup but it will work for now. Its just an office unit I rent. I'm moving from a similar unit but in this new unit I have smell to worry about so Im having to go with the room in a room for flower and a couple 4x4 tents for veg. Then I can carbon filter the room and the tents plus I have a commercial grade ozone machine to sanitize the air in the main room.

And to the haters 4000w isnt covering the whole 10x12. It just covers 8x8 floodtable. the rest of the room in a room will be for my experiments sometime down the road after I get everything back running from the move.