Yo minor threat i gotta say good box man! Its def hella stealthy, props!
Just read your whole thread, suprised no one has asked this yet... maybe im just blazed and missed it hahaha.
But what are the dimensions of your box? Does it lock?
As far as the 150w hps man, honestly i just say hold out, that light is probably gonna get to hot in their, Plus once you can get a bigger box, maybe a wardrobe or something you are going to want a 400w or 600w i guarantee it! Even if you cooltube your hps you are gonna have to probably buy louder stronger fans.
Good idea with the aquarium man, i have a turtle that helps me the same way...