Definately take those bulbs out of the housing and get them side by side in the middle of the plants about 10" from the top.

Rotate the plants everyday 180 degrees, more often the better.

Normally I like to hang the bulbs horizontally, but you would lose way too much light with the setup as it stands....so drop them vertically...

In my opinion, you will broadcast light over a more broad area and you will also give your plants the benefit of spectrum overlapping

As far as when to do it, when the flowers go to sleep, they need to go to sleep and stay asleep.

I would do this work during the first part of the their morning cycle, starting a half hour earlier than normal, or I would extend the evening cycle a bit and work on them then.

Please post a pic identical to post 19, pic #3 when complete....I would like to see it.

Thanks