Good idea or Bad idea?

Hey guys, so here's the deal. I have 18 germinated seeds planted in solo cups filled with FFOF soil. they are sitting in a litter box to catch any water that leaks out the bottoms of the cups.
 
My lighting set up for this stage of the plants is:
a power strip with 9 bulbs total plugged into it.
8 - 23W 1550 lumen 5000K
1 - 40W 2500 lumen  5500K
 
a total of ~ 14,900 lumens 
 
At first i just had the bulbs plugged into the strip with nothing keeping the light from escaping upwards, so i added a small shroud around the strip made out of aluminum foil.
 
This is where my question comes in on whether this is a good or bad idea:
 
There was still a lot of light escaping the litter box area so i decided to just add more foil around the whole litter box and tucked it into the inside of the litter box to kind of make a dome so almost no light escapes. 
I have a fan blowing directly on the light bulbs and over the tops of the cups to keep the temp down so i don't burn the little seedlings and it seems to be working quite well (its really not hot at all)
 
So now for the pics:

this is what it looks like from the outside
 

This kind of lets you know how far away from the cups the lights are, one set of lights is a little closer than the rest, due to the fact that theres an extra Y splitter on that one.
 

and here's the cups. This picture gives a better idea of how bright it actually is inside the dome.
 

and last but not least - a seedling that sprouted!
If you look to the cup on the right, you can see another little sprout coming up (does this look normal?)
 
 
Thanks for looking guys, please let me know what you think and leave any suggestions or tips please! thanks!

 

i took what you said into consideration and decided it would be easiest to just spray paint the inside of the aluminum foil reflector flat white.