I can't advise you on that lighting. I think aquarium lights are supposed to be bright enough to raise aquatic live plants though aren't they? If you don;t know for sure you could go to an aquarium shop and see if they have lights that would be better for plant growth than what you have. What you want is a full spectrum daylight tube or bulbs that don't produce too much heat. I found some nice little LEDs, one actually came with my paludarium set up which is where I learned about them. They are Full Spectrum Daylight LEDs that are only 5watts so there is almost no heat production. But they fit into reptile hoods not aquarium hoods. I inherited most of the stuff I set up from my daughter's 'reptile habit' which came to an end when she had to move.
One of the smaller hoya would work, I have Hoya curtisii in 2 of my setups, also DIschidia imbricata, Dischidia Silver Stars, Watermelon Dischidia and Dischidia major. The smaller leaved hoyas like lacunosa would probably work. I have a Chirita in one and I split an episcia and put it into 2 different ones. Also some of the more unusual begonias (dwarves) are sold specifically for this use.
One very cool plant you might consider is Marcgravia. They are more rare and sometimes expensive, they are shingle plants (they stick to walls and climb).
There are a few places that sell plants specifically for terrariums, things that stay small or can be trimmed to keep small. Josh's Frogs, Black Jungle Terrarium Supply. Glass Box Tropicals, Glasshouse Works...
I used to get some of these plants to try out in my greenhouse. But they tend to get lost. Or not do well in winter. A lot of them need high humidity and from December-February its usually pretty dry here. Not at all like the rest of the year.
A lot of people set up orchidariums in aquariums and terrarium/vivariums. When i wanted some orchids for mine, I went to Andy's Orchids in California. I have been a customer of Andy's for almost 20 years. They sell tons of miniatures, all species plants no hybrids. I told Andy what my set up was like and he specifically recommended some orchids that would do well, and they really have.
These are some photos of 2 of my set ups from the top. I am about to set up the 4th one for the specific reason of growing my Hoya imbricata. When temps fall below about 85-90 and the humidity drops, it will just stall out and stop growing. So I am going to leave it in the greenhouse until it gets cooler and drier then bring it in permanently to this habitat.
