There is a nice selection of crypts that would work well, as well as anubias. As for the lighting for both, even if you get down to .5w/g, you are still on the safe side, as these grow fairly well in minimal lighting. Even java ferns do fine at that level. I have a 5.5G crypt and java fern tank, and only have 1 10W screw-in cf that's not all that great, and the crypts are flourishing, and the java fern has exploded in growth and putting out baby plantlets.
As for ferts, not necessary at these levels, and no CO2. Regular gravel will work just fine, as for the anubias and java fern could be tied to rocks, driftwood, or any ornaments. And the crypts would grow better if supplied a root tab about every 3 months or so.