Can't exhale if you don't inhale. If you're worried about smell, you'll need a carbon filter on the exhaust.
Yep. I was just going to open holes in bottom of tent. Plan on moving everything into extra bedroom and doing an air purifier. Might create a little static pressure but I dont think that affects anything?
Is AC that much better than SF? SF is just more affordable.
That will work, but you'll have to run the exhaust ventillation constantly to contain the smell if you open the bottom vents. You grow space is small (relatively), you will want a fan that will completely change the volume of the air in the tent every 3-5 minutes, so just calculate for cubic feet and get the appropriate fan. The vents should allow enough air in.
Is it more cost effective to go in both holes? (haha)
no idea, fan is a fan. i had a random brand before this one 20cfm weaker and no controls it was just a little bit louder and spent little bit more electricity.
I use cheap in-line duct fans, 8" for my 6.5x6.5x7 ft. Probably not an option for the OP, because they are noisy.
Is that realistic?
Noise doesnt really matter. I just want something thats worth its buck. Id prefer quiet though. Its recreational in my state.