I've not had much luck with plants in BW but I always hear about people that do. I keep my tank at SG 1.005 and the one thing I dislike is the silk plants.
Vals lasted the longest for me and they did not die but they didn't grow either. I think my problem was trying to adjust them too quick (couple of weeks). Lately I've been thinking about giving it another shot with vals, java fern and java moss. Maybe anubias. If I do, I'll be keeping the plants in a separate tank and will slowly acclimatize them by rasing the SG by less than 1.001 per week.
I would lower the SG in my tank (f8 puffer and knight gobies) but really don't know the minimum range for those fish, and the fish do come first in terms of tank health.
If you really want to try something fancy, a suspended light with mangroves growing out is an option. But these need higher light.