input on new grow room

i'm working on my second grow room it is 3 ft wide by 7.5 this grow will be dirt i've use black and white on the whole room i've got 2 x 305 cfm fans
with a cheapo shade for now. will these fans be good enough for this size?
another question is there advantages / disadvantages to using hydro for moms apposed to dirt?

oh and 1000 watt mh

Those fans should be fine, but what KIND of fans are they? Do you plan on using a carbon filter for the smell?
Hydro For mothers is a good choice if you harvest often, that way you get new branch growth regularly for good clones. However, if you don't have constant harvests I prefer to use soil. That way it's more stable, your genetics are safer and less can go wrong... plus it's less maintenance.

Oh and with 1000w lights air cooling is prefered, the infrared they emmit is huge, I would personaly use two 600w and not a 1000w, better light coverage.

the fans are cheapo's inline duct fans ya my moms to be are growing wild getting to big for my home made table so think i might letem see soil soon theres 10 hopeing all female rooting a clone from each i'm going to throw into 12/12 to check the sexes for sure

i though that as well next grow gotta work with what i got for now i'm thinking of switching all my grows to 600 combo ballast

Those inline fans should work but only if there are no bends in the ducts, at all! A centrifugal fan would be a good idea, they aren't cheap though, but they will last for years and are worth it in the long run since a 1000w lamp puts out a lot of heat. Add as much ventilation as humanly posable.

ya, if need be i will air condition it =P i'm using some air on my grow now.....get threw this next grow i'll get high end fans and light hoods etc slowing working on it.grow some buy some lol