3x3 ventilaztion issue maybe?

Okay guys I am ordering my 3x3x6.5 grow tent this Friday along with a 5 gallon smart pot. I am currently growin in a smaller set up. Okay here's the problem! I won't have enough money until 3 weeks to buy a inline fan.. The tent has 3 6" holes up top for air to go out, and air comes in by the 3 air passive cents down bellow.. Now I have 3 4" cheap walmart desk fans and 1 computer fan I am using right now, could I use one of these as a passive air take up too?/: I think it would be to slow on cfms.. I also have a oscillating fan that will be hanging on the frame inside the tent, I am not worried much about temps since I use cfls and my tent is going to be right next to my window AC unit Hmm ideas???

Also only one plant is going to be planted at a time.

I guess I can always go down to Home Depot if I absolutely need to/: and get a inline duct fan.. I have like $40 gift card with em..

what kind of lights are u using

that will tell us if u are fucked or not..............as for the home depot fan do not buy it .....it is not a wired to be plug in it is just bare wires to be hooked into a power line

http://www.amazon.com/VenTech-DF6-Duct-Fan-240/dp/B005KMTYFK

that fan should be more then enough to keep u cool in the tent LED/HID/CFL/T5

now passive intake will work but u need to make sure that it intake vent is across the tent from the ejection point ( this means were the air is removed from the tent) if your exhaust point is in the upper right u want the intake at the lower left

other wise i will tell u to order a 2nd 6 inch fan like i linked to u ........and build yourself a intake filter box ........i use this myself

No no no I'm using cfls lol not to keep the room cool really just mainly to keep air passive intake going.. Don't want lake of oxygen to the plant. And that ventech was actually the same exact fan I was going to get except on ebay and a 8" one for $28 fee shipping (; I was just now woundering is ventech a good brand?? BUT this is just for my current grow because once I receive my tent I want to transfer my one plant in the tent and get her out of that small box I made. My next grow I'll have an 400watt hps and inline and carbon filter. Just short on money this grow lol