need help cooling my small cab

[there goes edro]

Hey IC!!! Hoping someone with more experience tham myself can help me with cooling my cab during the upcoming summer months. I normally dont grow during the hot months but this year I want to grow my own as much as possible. My cab is 55 inches tall 3 feet by 3 feet with and length. I run a 400 w mh/hps for lighting. 400w is coonected with 6 in duct to a 400cfm inline fan pushing air through the 400w and out of cab. There is also two computer fans mounted inside the cab for air movement, and a 200cfm inline fan mounted inside the cab with 4 in ducting routing air into a can33 airfilter. Dont have pics because the cab is torn down at the moment. During the fall the temps stay around 72-80 degrees f, but in the summer the temps will soar to plus 100f and dont think my plants will thrive in too hot of environment. Can someone please share some cooling solutions so I can grow during the hotter months. Thanks for any input in advance!!!!

 

[STUNKY]

Do u have air conditioning in the house? If so u should be fine.. If not i don't see it working.. I have grown in smaller spaces with less of a blower.. I had the blower ducted to the hood pulling air outta the area.. The heat is gonna wanna go up so if ya got a couple feet above the hood it should help also.
Not sure how it would work but use the 400 to pull air out of the cab to the filter and put the 200 inline on the other side of filter to help pull air through filter.
Seems to me with a 400 pushing air in and a200 out that u problem can smell a little weed sometimes, can u?