grow box veg and flowering

would a 10x2x5 grow room be a good idea? i was thinking about splitting it up in half at 5 feet to have a flowering room and a vegging room. i was wondering what kind of fan system i should have. ill be using cfls for this room.

I would reccomend computer pc case fans. Silenx ones. they are not to expensive and you can use like 5 or 6 of em.

go a 150mm (6inch) can fan so when they start to stink u can buy a carbon filter to suit
put it on the flower side , and have a coulpal of vent holes from veg side

would a 150 watt hps be good if i put one on flowering side and one on vegging side? or would i need more light?