I've read Ed's book many times. Still do. Even though I had the indoor/greenhouse edition, I found it helpful in my outdoor endeavors as well. Your grow sounds like the novel grow section, no? It's a great resource. This site, and others, i.e. http://www.overgrow.com http://www.icmag.com are also good sites to research too. Here's a short list:

Good seeds - quality genetics are key, in this case maybe feminsed, if you do not have a dedicated veg and flower chamber to determine sex.
250W HPS ballast
2 bulbs for the ballast. MH conversion for veg, HPS for flower.
Good soil mix - I make my own compost and mix it with Fox Farm's Light Warrior (plenty of perlite already in it!) with active mycor to help break down the nutes in the soil need for good plant growth.
Quality nutes - I prefer organic guanos high in N for veg, and others high in P for flower. I also prefer to add SuperThrive with my water to help things along.
Mylar - Cover everything in the closet. Mylar will reflect back 98% of the light that hits it. This will help that little 250W power the plant up more.
3 gallon pot.
RO water - and a lot of it!
Fan.
Ozone Generator.
Power strip.
Timers - controling lighting and the amount of ozone will be a must! You need to regulate light during veg and flower, 18/6 for veg, 12/12 for flower. Calculate volume of the closet and run the ozone generator at a minimum to kill odor and mold only, as too much ozone can harm a healthy plant.
Paper towels - You'll need em to germ your seeds.

Last, but not least, patience and a lot of love. This is a start. I am sure others will chime in with more, but this will get you going, and honestly be the barest minimum you need to start. Good luck!