A Socal Attic Grow Done Right ?

So. I know this has been discussed over and over but I'm still thinking about setting up a grow tent in my attic and running it at least most the year. I love in Socal and in the hot days my attic is at least 5-8 degrees warmer than outside. I mean it can easily reach upwards of 105 in there during august-October. This may be a window of time I can't operate.

My house has central AC and stays pretty cool even on the hottest days. We let it get about 75-76 conservatively on those days obviously the attic doesn't get AC as that is a huge waste of power for an otherwise unusable space.

I was planning on using a 5x5 or 6x6 grow tent.

I planned to use a 6 inch inline filter attached to a carbon filter blown from a 600w hood for lighting. This hot air will be vented out the top of my roof.

I was going to hook up a 6 inch vent tube to the bottom of the tent sucking cool air from the inside of the house which will be right around 75.

My question is. Assuming a mylar lined grow tent how insulated are they? Would a 500 CFM fan suck enough of my cool house air through the tent to keep the tent in appropriate temperature levels?

I know I can do AC but... If I run the lights only at night and suck in cool air from the house. Can I get by without AC as long as I aggressively circulate cool air through the tent despite the attic getting in the 90's plus?

BOSS i'm not the best grower in the house but i love ur idea. question how are u going to keep things cool, if u get the tent cool but u will still have heat around the tent. i'm thinking of a ice cold soda out side in the sun, it can be done maybe if u run ac ducts to the tent to keep her cool and 2 big fan to move the heat out of the attic one on each side of the house. im guessing u can stand up in ur attic. it's just a thouhgt?

why not place tent next to window, have you intake suck the cold air form outside and have exhaust ent up and out of room, i got told this and im having difficulties with mine but im sure if you did this it owuld be easy to control heat

just splice into your a/c duct..