they should do fine, I had a huge group of them in my 36g when it was low light.I have a few jungle val that aren't doing very well for me. I'm not sure how they do in lower light, though.
It probably will do ok, I think that plant can grow in the dark.The rotalas did well, and I had L Aromatica going for a while. But I've reverted totally to low-tech, low-light, no-ferts, infrequent water changes so I need something pretty hearty.
I like the sunset hygro. I wonder how it would do with my tank lighting.