That's looking good, nice work there. And thank you for the "thanks", you're most welcome.
I do have a suggestion on your stocking. All fish mentioned are shoaling fish that live in groups and will be more relaxed and thus less stressed (= healthier) in larger groups. I would say minimum 6 or 7 of each. This is not an issue for your 39g.
By "butterfly" do you mean the African Butterfly fish, Pantodon buchholzi? Or (as I rather suspect) the dwarf cichlid, Mikrogeophagus ramirezi, called various common names like blue ram, common ram, butterfly cichlid [there is also an African fish similar that is coommonly named Butterfly, just for more confusion--common names
]. With any of these, water parameters are more of a concern; they are soft, acidic water fish. Do you know your tap water pH and hardness? The fish listed so far are somewhat adaptable except to extremes, but these "butterfly" species are much less so.
One last comment on the brick, I would place it sideways (lengthwise)so it is not completely on the wood. The reason I say this is not for looks but for stability. I can see it toppling off the wood quite easily. And did you thoroughly boil the wood? If it has been in seawater it will have salt in it which is not good for plants or some of the fish you mention.