You would get much better results using an HPS lamp. Perhaps one in a smaller wattage if heat and/or space is an issue...
That size would be ok for one or two ladies. Heat should not be a problem and just opening the door on and off during the light cycle would work to expel it and allow fresh air to be introduced into the garden. Ventilation is important and the exchanging of the "stale" air for fresh clean air is essential for healthy growth and flower development. The foliage of any plant is dotted with tiny pores called Stomata. These tiny pores allow the plant to breath and expel moisture. Think of yourself in a coffin and what would happen as you were breathing and what would happen as the air ran low? The same principle applies to plants and the effects would be the same...
You don't have to thank me bro, it's my pleasure to help you out. I am sure you will be pleased in the end when your enjoying the fruits of your labors. A couple things I would like you to do for me though and for yourself, be careful, be quiet, be cool and keep fighting the good fight!...
