First Grow Advice

So heres the deal. I've been doing TONS of research on growing and feel that I have gained enough information to be able to make this happen. Yet, the fact still remains: This is my first time. Basically, I'd like to outline my plan, and see what some more experienced growers think, and what changes they might make. Any help would be appreciated!
 
Grow Room:

• My closet.
• The area of my closet I will be using is ~3.5 X 3.5 ft. So just for ease I assume 1m²
• Reflective Mylar to be hung around area.
• Fan to keep room cool, and draw in outside air.

Lights:

• My first idea was to use a 400 watt light (both MH and HPS for their respective stages of growth) but the more research I do, and under the idea that I can never have too much light, I think I may need to get a 600 watt. Advice!
• MH for Veg, HPS for Flowering
• 18/6 for Veg
• 12/12 for flowering

Strain:

• I went with a Feminized Cream Mandarin from Seedsman because of it's yields, flavor, and colors.
• Also got a few OG Kush seeds.
• How many do you think I could grow in this area?

Watering:

• Plan to water with nutrients as dirt becomes dry at the first inch or two down.

Smell:

• Going to handle this with 3" Carbon filter/fan set up.
• Should also help with circulation!

Procedure:

• May try to main-line, and use LST but nervouse to attempt this on my first grow. Depending on how many plants you guys think I can grow in this area, I may just try with one of the plants.
• Using LST wether I main-line or not.
• Going to drop temp. last few days of flowering to bring out flavor, color, and tricomb coverage.
• Any other steps would be appreciated.

Any extra information or changes to my plan for more experienced growers would be amazing. Thanks in advance.
 
EDIT:
 
10/22/14
Grow Medium:
After a little more reasearch I found that I completely neglected my grow medium. I stumbled upon Hempy's technique using a 3:1 (permite:vermaculite) medium, in his bucket, watering with nutes. I feel as though for a beginner like me, this method is simple, straight forward and should produce good results for my first few grows until I can find the best way to suit my specific grow.

 

Thank you so much for the quick reply! Definitely planning on going hydro after a few. Any experience with LST, or main-lining?

 

Well I figured that the right placement of the exit fan for the carbon filter, and the inlet fan would provide enough air movement. My set up would look something like this:
 
----------------------------------
|                                    |    Oulet fan
|                              --->   ----------|''''''|-----|'''''''''''''''''''''|
|                              --->   ----------|,,,|-----|,,,,,,,,,,,| Carbon Filter
|  /|\\ /|\\                             |
|   |   |         \\ |  / Plant       |
|                  \\|/                 |
|             ___|___              |
|            |            |   <---    {  ] Inlet fan
|            | ______|   <---    {  ]
----------------------------------
 
Arrows representing air movement. I figure the outlet at the top (heat rises) with the cool air from the bottom (which would warm, rise, and exit) would be sufficient for circulation of air and the removal of heat, I may be wrong, let me know! The door to the closet is more like a blind and allows plenty of air movemtn so it shouldn't be trapped.

 

Oh I see! Looks like I might need a duct/fan set up for the inlet!

 

So the best option is to have the outlet run to a place that is seperate from the inlet all together. I have a few ideas, I do live in an apartment complex however so I'll have to get creative!