Lighting 6 x 2 foot tank

[sitandwatch]

So I am now starting a 105g shallow tank thanks to Josh.

I am looking at light and my options.

Due to the depth of the tank and cost I am going with T5's.

A 6 foot light is pretty pricey so I am thinking of a 4 foot with 6 bulbs? I will loose some light on the sides but it may not be to much.

The other option is two 3 foots but I don't know if that would be much better?

What do you experts think ?