I love this bold idea of a Steemit village or city, and I don't want to discourage you, but I'm not sure if your country is the best place to realize such a magnificent dream. Here are some questions and comments:
(1) Climate: Most of Nigeria experiences monsoon rains (light blue area).
Nigeria map of Köppen climate classification, CC—BY-SA Ali Zifan
The tall wooden buildings you used as examples are located in much drier areas, such as Stockholm and London, where constant heat and high humidity are less of a problem. Wood is an organic material that is susceptible to infestation by other living things, such as mold and insects. True, wood can be pretreated, but such chemicals create health and environmental problems.
*(2) Energy Consumption and Storage: Wifi is currently very fashionable, but it has been linked to health problems that are underreported in the mass media (vested interests). Ethernet seems like a less energy-intensive and safer way to go. Being close to the equator, Nigeria has plenty of sunlight, but what about when there is no sunlight (at night or when it rains)? Battery manufacturing, storage capacity and environmentally-friendly disposal pose serious problems. What are your suggestions?
Religious and Ethnic map of Nigeria, CC—BY-SA Khiram
(3) Political Problems: Based on my limited knowledge of recent Nigerian history (the sad story of Biafra [https://en.wikipedia.org/wiki/Biafra] and the even sadder story of Boko Haram [https://en.wikipedia.org/wiki/Boko_Haram]), Northern Nigeria is a very improbable place for a Steemit village. Thus, the small Igbo area is most likely to accept such a bold new idea. Is this where you hope to build your village?