tent help

hiya all im wondering what is the best size tent for a 400w hps
was thinking of a 100x100x200 5" extract with c/f and cool tube
or
120x120x200 with 400w hps 6"extract and 6" c/f run though a cool tube and vent to outdoors with a 4"intake ant bottom with oscillating fan in tent
any help will be great full thanks fellow stoners

3x3 feet should be your limit with a 400 watter. I have a 3x3 tent with a 400 with. 8 inch fan on top and an oscillating one inside works great

cheers

I have a 4x4 foot tent 600w hps , 6 inch fan with carbon filter and an oscillating fan good enough for me although I could put a 1000w hps in there