building new cabinet

hi every one just wanted to see wha you think of the cabinet i have made its 2 1/2 foot long 2 foot wide and 6 foot high and need some help on intake and out take ive also got a 250w hps light any ideas thanks

I used 2 inline duct fans for in and out take on my wardrobe (https://www.rollitup.org/stealth-micro-cab-growing/506661-stealth-bubblicious-automan-grow-cfl.html) picked em up on ebay for 12 quid each an the ductings about 2 quid a meter. Does the job nicely

carbon fan and filter is your friend. a 4 incher would work but i would go with a 6 inch if you can find it cheap enough. they sell a thing at lowes you attach to your drill to make the duct holes.