Need help on picking a mylar growing tent.

Hi, I am new to growing and will start in a week or two (depending how long the seeds take). I plan on growing 5 Barney's Farm LSD plants with a 600 watt hps light. I have everything now besides the growing environment. Any suggestions on the dimensions of a mylar grow tent would be greatly appreciated whether height to make sure the lights at the right distance from plants, to length and width to ensure proper spacing of the 5 plants in order to achieve maximum growth and yield. Thanks

does anyone know about how much the yeild would drop if I lined the corner of my closet as well as creating 2 walls lined with mylar rather than getting a tent?

I bought a 32.4 x 32 tent and the intake/output holes in the tent will not fit a 6" duct for a 600wHPS ballast. Here's a pic of that tent: