4x4x6.5 tent lighting, heat is a issue.

So as you have guessed i got a 4x 4 tent and I am trying to figure what i want to use for lighting. Heat is an issue because to tent is not really set up for venting very well ( limited In and Out points). I was leaning towards t5 ho and an 8 tube fixture because it would fit nicely and evenly distribute light and i could get away with less venting. what do you all think? Am i way off base and need to go with a HID lamp?