dr 150 newb help please

i want to get this tent kit
http://hydrosupermarket.eu/products/DR150-1.5M-GROW-TENT-KIT-600W-5"-FAN.html

i also have another 600w hps light, would adding this be overkill?
and i was wondering about intake, looks like this one is passive? would i have to add an intake fan aswell?

+ what size pots would you use for bb cheese? 10l? 15l?

u sure wud my man only gaurenteed way to replace and take out at the same time, excellent choice tent wise by the way,, that will be a lot of heat when up and running with 2 lights so u will idealy b bringing in some outside fresh air in and pulling out via the 5 inch fan with carbon filter,, weather in uk ok now but in the summer u wont av a chance without good extraction n good intake, passive r fine but with that much heat n the negative pull off the 5inch fan ( sucking the tent inn ) its nice to av a little 4inch crappy cheap fan bringing in fresh air via some duct. board up a window cut out 4 inch hole at tent level outtake hole and connect a 4 inch duct flange to the boarding that u put up on window around the 4inch hole once screwed on connect ya duct to this then insert ya cheap fan and duct to ya tent