"If your 'unique' tree is a Fukien Tea it needs to live outdoors. I know the internet will tell you that all kinds of bonsai trees can live indoors but it's simply not the case. As I said it's simply not a beginner tree but if you want to make it work put it outdoors and it should live".
My FT lives indoors for about 4 months of the year in a south facing window. It flowers continually, even through the winter. Too cold here in Canada to keep it outdoors through the winter. I don't use any special lights and I mist it everyday. It 's doing great!
Surely Dallas is warm enough to keep it outdoors, isn't it?