That's a great job you've done installing it in there. Id only make one suggestion though.
On the two top doors, you might want to think about adding a lip to the back of one of the doors to stop light from emanating through the gap. You will have to close them in order. I.E. Left door then right door. But it will add that professional finishing touch.
That's My two cents worth anyway. Cant wait to see some fish in there!