Ventilation question

I just purchased:

Equipment (links)
Ballast: GrowBright Premium 1000 Watt Switchable Ballast
Hood: Euro Reflector
Fan: GrowBright 6" High Velocity Inline Fan
Light: SunMaster 1000 Watt Super HPS Deluxe Bulb


I also got 25' of tubing to run air through.
But i really dont have a place to run fresh air into the room. the fan i got will be in my window, sealed off, and attached with tubing to the Hood.

Is there a need to have fresh air from out of the room pulled into the hood?
I have air circulating in the room.

And also, is there anything else i NEED to buy or include?
What would the use of a carbon filter be? i am about 200ft away from anyone elses house. dont think smell will be a problem. people already smell me smoking all the time.

Any opinions on the quality of this setup for 9 females 5ft tall at end of flowering?
Hope i went the right direction with these products.




Edit: I will also be running my 400w MH that im currently useing at the same time as the 1000w HPS. what effect will this have?

Bump?
Someones gotta have some advice

Wow. first time ive ever posted something and not gotten a reply withing 24hrs... is it that hard of a question?

First thing that comes to mind is that 9, 5ft females are going to be A LOT stinkier vs. just smoking some bud. May need a filter for that for starters

I would def look into a carbon filter, diy is the best way to go on those IMO

the more fresh air you get in your room the higher the c02 level will be. you will do alot better all around if you get more fresh air and also keep your temp under 79