I am guessing you have 2X 54 watt T5HO? The Wet Spot in NE Portland had the best selection of plants of the LFS in Portland when I visited down there last spring. Your fixture with two bulbs will put you in the 'High Light' category. The good news is you should have sufficient light to go just about any species; I hope you are running CO2 or algae may become an issue fairly quickly. Start with a short light period, maybe 4 hours total and increase slowly over several weeks.
Pick up some easy plants to start:
Hope this helps!
75 Gallon, 2X55W AH Supply CF 8800K, 1XMarineland Doublebright, 2X Marineland 350 Magnum; 45 Gallon Tall, 96Watt AH Supply CF 6700K; 30 Gallon Long; 2X36W AH Supply CF 6700K; 20 Gallon, 1X26W AH Supply LED kit; all with Press. CO2; Heat Treated (Calcined) Montmorillonite Clay
Greater Seattle Aquarium Society (GSAS)