grow tent set up problems

just got a new (well first grow tent) size is 1.2x1.2x2meters high secret jarden, i got 4 plants 2 in dwc and 2 in soil with a 300w dual spectrum cfl grow light.
6"fan
4" outtake bathroom fan
temp at a steady 80f
thing is i want to put a 250w hps light in there, but can't afford any better fans BUT i have 2 more 4" toilet type fans, i was thinking of hooking all 3 up as there is enough outlets in the tent to get rid of heat that way, would it work????
i carn't see the point in buying a proper fan if i have 3 of these toilet type fans already, in fact i have just realised there the cheap inline fans that cost about £10 each but i got them for free of a freind.
any help would be welcome

no one????

If you have a thermometer in there try it and see what happens. If your temps are anywhere between 26 and 30 degrees your fine. If they are not even close you need to get yourself a proper fan. They arent too expensive and it will benefit you massively.

Maybe consider putting cool air into the tent as well as extracting air or getting an air cooled reflector. If you cant afford one of those look at cool tubes. You only have to buy it once and it will serve you for years to come. Good Luck.

I would wait until you can afford a air cooled hood and inline fan. In small spaces without proper ventilation, really any wattage will overheat your tent and cook your plants. I'd just save your money and do it right..

303 is right!! Aircooled hood and inline fan £100 if you shop around a.k.a eBay.