Hi. Welcome to the forum. Nice tank but I think you might need to have a bit of a rethink on your fish. IMO
your tank is too small for the shark and bristle nose when fully grown. The shark may well eat your neons. Also, and again this is only my opinion, I think it advisable to either go down the tetra/raspora route or live bearer route. They can co-exist but do better when the water is better suited to the species (harder slightly alkaline for Livebearer and softer slightly acidic for tetras).
Good luck with your tank and do post your progress.