Next Grow setup. Need advice on one critical thing!

my next grow setup is going to be inside of a cardboard box about 3ft high and 4 ft wide. I am planing on using this for veg and plan on moving the plants into a flower box. the box will be covered on the inside with a mylar blanket, inside i am going to hang a ballast with 3 halogen lights and one actinic blue t5 bulb. i need to figure out how to make a vent system, from past grows i know itll get hot in there. for now i will be growing in just soil but planing on trying some others with a dwc setup in the box. Is this enough light? are there any other things i can do to improve this setup?

well first off putting 3 halogen lights inside a CARDBOARD BOX is asking for fire.

literally.cuz thats the kinda shit that burns houses down


did you know they will cut plywood for u at lowes?

so if its some concealments thing make a wooden box inside the cardboard box.

and buy a fire extinguisher, just for shits and giggles.

rofl i wont be using a cardboard box