What size shelf are you looking to set up? An Emily Garden system might be good, it's 6'H x 16'W x 24'L. As far as the light goes, I wouldn't use the cam light you bought from Amazon. You can grow very small plants with Compact Fluorescent but your yield will be little to nothing. Seedlings will do well under a 24w, 2000 lumen, T-5 bulb. I have provided a link with some good options.

Here is a link that might be useful: Groflo Hydroponics Fluorescent Lighting

I had very good luck using cheap CFLs and fluorescent lamps.
They are north-eastern windows so they don;t get much help from the sun.

Soil temperature is far more important to get them started.

I have a "vestibule," bathroom stall sized room that is between my living room and the outdoors. I want to make it a mini plant room. So, the exterior door leading to my yard is glass and aluminum, natural light coming in and has a dog flap at the base. (Air sneaking in and out...) . The wall to the left has a long window, good light from the south. The wall on the right is just solid; I could paint it reflective or a light color (or would be be good actually to have a black blanket/ cover to soak up heat? The door between the living room and vestibule is also full length glass! Very nice. But it will get cold in there this winter. Because it will get cold and there will be snow right outside, I want to use a sodium bulb which will kick out heat, as part of the system. There is presently one lightbulb fixture on the ceiling so I will use that for power, and if necessary run in a cord from the living room for more.

If I want to have two shelves of plants, one on the right and one on the left.... with some seedings being sprouted and some large plants, like my myer lemons... what would be "enough?" Once sodium / MH light with reflector on ceiling or wall, and also some florescent? It will be a green, glowing room as I visualize it...