Yes! This is an idea that I was considering for my 6ft. With plants just go all out on every type of anubias variant.
In terms of fish: school of congos (normal or yellow fin, both are nice), elephantnose, ctenopoma x2/3, senegal bichir, delhezi bichir, african butterfly fish, try and source the wild kribs off a forum member (look better IMO), maybe a cool african cat.
watch out for the ctenopoma + bichirs eating barbs if you want them in the tank, make sure whatever barbs they are, are at LEAST an inch, any smaller and they will be food i think.
IF you do this I would really like to see the end result. A cool idea would be to make a riverbank background out of poly, look at some threads in DIY, some good ones in there.