Ventilation for a Dark Room 120

Im finally starting to get all my shit together but i just cant make up my mind on which fan i should get for my tent. Im going to be running a 400w Lumatek with an air cooled hood. My question is which fan should if im planning on only having one fan as an exhaust for both the tent and the 400w cooled hood. I plan on having a carbon filter with a little ducting then the cooled hood then a little more ducting going to the fan outside the tent. Anyone have any other recomendations on a ventilation setup?

Im thinking about a 4" inline canfan at 142cfm. Adequate for what i plan to do?

Or possibly the 4" ecoplus supreme at 170 cfm but really im kinda clueless when it comes to ventilating a grow room since this will be my first actul room of superior equipment. So please help a brother out

I will be using the dark room 100 instead of the 120. Pease HELP

Either of those fans will work fine. Hang the filter if you can, less bends in the ducting and more floor space.

Get the biggest fan you can afford if your using it exclusively. Its not like your going to think you have too much ventilation later on.

Also, What would be a decent Carbon filter for the dark room 100? didnt know there were so many different sizes and shit.