cooling question

i am using a 160cfm fan for my exhuast from lights and it pulls air from the room through the light. today the room seemed a little warm,prolly cause it was kind of warm and humid day. i also have a small lil cheap 6in desk type fan pulling air from out of the room into it. was going to be getting another fan was looking a 277cfm. was wondering would it be better to use the 277cfm for more exhaust out of the room or use it for pulling air into the room from my ac or window? thanks for any advice in advance. oh and i have another fan kind of like a tower fan that i use to circulate the air around.

exhaust, always. most people actually use a passive intake, as its easier to control the air you're replacing. its A LOT easier to exhaust air than to push air in