I am new to bonsai, but grow indoors as well. I am not in the best place either to grow outdoors... but yet I am still here too. You have very beautiful looking trees, especially that tiger bark ficus, I hope mine can come out healthy like that. However, I would say that the amount of light in the room will not be enough for all of those plants. Just my thought. You may be aware of how fast light decreases in energy as it moves farther away. The plants a foot from that fluorescent probably aren't receiving that much light. This link
http://www.bonsaihunk.us/info/IndoorLight.html is a website that helped me better understand artifical lighting and all that goes with it. I can't exactly see, but do those lights only contain 1 bulb each? If so I'm assuming the overall wattage on those bulbs isn't very high, which means does not produce very many lumens. The sun naturally produces 100,000+ lumens, certain times of the day and may be less or more depending on location. That's a lot of energy, think inside now. All the light in the room won't even amount close to 100,000 lumens, unless you setup 4 huge 1000 watt HPS lights, then maybe you can compare. My point is, your trees may survive in that room, but not thrive. Having all that extra energy allows them to grow and flourish, however, all your trees now look pretty dang healthy and well off. You may know all of this already, but that's the problem with growing indoors and one I have seemed to learn now, artificial light can't replace the amount of energy given from the sun. The bigger the lights you use, more wattage, the better you can substitute the energy loss from growing indoors. I'm not an expert but there's my two cents. Hope it helps!
