I can't help with the BBA but I really love the tank. If you don't mind a suggestion, I would actually switch the ludwigia and the wallichi so the red it acts as more of a focal point between the two stones to the right. If you want to get really wacky, have you considered adding some moss? Especially around the stones, I think the dark green would really stand out wonderfully around the glosso.
Wabi Kusa is just an Aquascape Katamari