A lot of bulb choice is a personal preference so I'll let others reply. If they're 39 watt T5 they'll fit. Reggie (gareeferman) is a good person to give lighting advice.
i think when you close the hood,the back of the light compartment seals off that area somewhat.im not sure how much light would actually get through.you may want to try it under the feeding flap.ive seen them put there and it seems to work well.
im not sure if youll get that shimmer that your looking for.i think that comes from the light penetrating the surface.just sit it back there temporarily and check it out.it may very well work there.