2 x 4 x 5 tent inside my closet. where to vent?

Ill post some pics soon since I may not describe it well enough, but baiscally i have a closet with sliding mirror doors.
I know I probably should have just setup a homemade room behind them but i got a great deal on the tent for $75

anyways, my question is should I carefully cut a whole in the ceiling of the closet to vent into the attic/roofspace or try to run ventalation across the room to the window??

I just have a fan basically pulling recycled air from the closet floor, so I'm pretty sure thats not good even though I only have t5s right now

If you're gonna run HPS you're going to need an inline for outtake, it'll get way too hot. If you can I'd definitely cut a hole and vent to the attic.

from what I've read venting into the attic space will cause mold and dry rot issues :/

only if the attic does not have proper ventalation and you are dumping a large amount of moist air into the attic. for a tent in a closet,you will be fine. after running it for a week or 2, pop up in the attic & look for signs of excessive moisture.

worried if this eve n connects to the attic now... guess theres only one way tfind out

I vent mine just outside the closet doors, if it gets warm I open the bed room window or open the closet doors more. Alternately if it's cold I close the doors more, those doors don't seal very well so they get enough air even with them mostly closed. But if the attic is doable that's the route to go.