Thankyou all for the advice. I've since cut back on wattage by 55W for 8 hours a day. Haven't hooked up a second timer for the "noon burst" of light yet, but it's coming. I guess it's easy to get over zealous with all that wattage when you've just graduated from Eclipse 12W bulbs and "stock" lighting!
Any thoughts on additional plants? I was expecting someone to comment on the lack of color/contrast with plant selection. All thoughts are welcome!