Just read threw the whole post, and all I can say is WOW!!!!!!!
You have created some BEAUTIFUL setups, and I am thinking hard on doing a Riparium myself! Thank you for posting all of the info you have and I can't wait to see what you come up with the Tang setup!
I have kept different Africans for years, and the Brichardi's are a awesome group of fish, and will quickly breed if they have the correct water parameters! There are many different colors and stripe patterns in the family, and are easy Africans to keep too!
Best of luck with whatever you choose!