Lighting for greenhouse shelf.

I have a small greenhouse shelf-like thing that's L-18" x W-27" x H-91" with 1 shelf in the center. I'm going to keep my little Dp & Ww clones in there until (I'm hoping) they're no more than 2 feet tall. I'll fit maybe 12 plants iside at a time. I have no idea what wattage, voltage, lumens, color, and all that stuff I need.
Not lighting up a room, just 45.5" (91 total) of the upper and lower shelves.
So what would the wattage be? Like... 75? idk

Looks like this!:
.-----___
----_/---\_
--_/-------\_
-/-.--------.-\
|-------------|
|-------------| <---- upper chamber
|-------------|
|-------------|
============ <---- half way up shelf
|-------------|
|-------------|
|-------------| <---- lower chamber
|-------------|
============

The green part is where the green goes

get a few 2-4 bulb ho tf's
6400k/6500k for vegging.

plan on flowering here? 2800k-3000k for flower.

just to give you an idea.
http://www.htgsupply.com/Product-GrowBright-2-Foot-2-Lamp-High-Output-T5-With-Choice-of-Bulbs.asp
http://www.htgsupply.com/Product-GrowBright-2-Foot-4-Lamp-High-Output-T5-With-Choice-of-Bulbs.asp

there are cheaper alternatives, like t8's from lowes/depot etc.

but i really recommend HO t5 for growing.

Lets say I had a $100-$120 budget left for lights :/
Not lookin to make giants, lookin to make something that will grow it to a normal height.
(Durban poison = about 3 feet)
(White widow = about 3 1/2 feet)

Yay I found something at 6500k
http://www.lowes.com/pd_302257-3-26966_0__?productId=3202347&Ntt=fluorescent

I'd need about 20 of those though right? lol
I have no idea...
Maybe less... I was thinking about making 2 fixtures (one for the top, one for the bottom) with maybe 8 of those bulbs in each. Would that work? Too little, too much?

Anyone know if that would work? they look like ordinary fluorescent light bulbs to me. (in appearance)