Newbie indoor setup?

Hello: Fellow Tokers

I am considering starting my first indoor grow,(I have been growing outside, but due to lack of a good direct sunlight and harvest time I want to grow inside) but before I spend the $ I want to know if my propsed setup would be a good one.(good or bad let me know)
I plan to use the Homebox GL80 http://www.buy-the-homebox.com/shop/product_family_gl80.html (its 2'7" x 2'7" x 5'11")

400 WATT HPS+MH DIGITAL GROW LIGHT AIR COOLED HOOD 6IN
http://cgi.ebay.com/400-WATT-HPS-MH-DIGITAL-GROW-LIGHT-AIR-COOLED-HOOD-6IN-/290464351910?pt=LH_DefaultDomain_0

5 gallon Air Pots (I want to grow in soil)

I know I will need a few other items,(good soil, fans, ect ect) but I just want to make sure I have the basics covered and I am not wasting my money.

Any help would be great, I have always grown (bag seed) but for indoor I would like to buy a quality strain thats easy to grow (any suggestions for my setup would be great)

Thanks: STLmatt

This should be a good setup for 4 medium to medium-large plants.
Pretty good deal on the HPS light. Here's another link to take a look at: http://www.htgsupply.com/viewproduct.asp?productID=47981 (although I don't think this is a cool tube setup).