Light recomendations for a 30-36" tall case

[horthall]

I am building a terrarium that will be primarily focused on small species that grow in the intermediate temp range. The case will be approximately 30" tall maybe 36". Currently I am looking at a 4 bulb t5 2' fixture. Will this give enough light for high light species like Catts at the top (up to 12" from the light. And low light species like pleurothallis in the bottom 24-30" away from the light? Is anyone growing a broad range of species in a taller case with successful flowering. Would appreciate thoughts and comments.