small closet setup

i have a closet 1m square and 1.8m high im useing a 600w light with a cooltube and ventelation will this work ok without getting too hot would like some advice before i go ahead with this project and could i use the cooltube as my exhaust or should the cooltube have its own inlet and outlet :thumbsup::smokin:

I am planning a similar set up, only lower...only advice I can give is to pull the air through your cool tube, through a filter and out...I am also planning on linking my fan to a thermostat in order to deal with varying temps. hope this helps