I believe the "Agrobrite" are t-12, the less efficient
form of linear fluorescent tubes. Probably you would be
better off with high output t-5s (probably a combination
of 6500K and 3000K, depending on stage).

Fluorescents work fine as supplements to natural sunlight,
if you have enough exposure. I wouldn't bother spending the
extra money for Agrobrite, either spend a little more or
use standard cool white and warm white in combination.

I've went ahead and placed the high light plants back on the window sill and put some of lower light loving species under the lights. I keep them on 14 hrs a day and have some extra light from the windows. We shall see if any blooming takes place.