First Closet grow setup help

ay guys,
im about to grow in my closet. its about 5 feet wide 3 feet deep and 7 feet high. the left of my closet leads to outside and the right leads to another room. one of my main concerns is the ventilation. does anyone have any ideas on venting a closet such as this?

if you knew where a a/c duct was you could splice from there or if you have a light in there pull it out like the whole deal and you can put an exhaust fan up there to blow into your attic

problem is i live in an appartment complex with someone living above me

no one has a simmilar problem? will i need to change my setup?