Nice idea, that will go wrong all the way.
The bad part:
First, the name...you don't name the city after you or your pseudonym.
Why not ? If anything it would provide some marketing push and his name will remain in the African history books and on the blockchain
Second, a metropolis is not 3 square miles or 8 square kilometers. For example, Disneyland Paris is 3 times that Berlin 100 times.
It's more the size of a village than a metropolis.
It's a proof of concept. I doubt there are vast lands with all facilities (power, water, etc) just waiting for someone to claim them, regardless of the country.
Third, using a brand new token because...why not use bitcoin? Oh yeah, we need an ICO! ... I don't understand the need to build a new village from scratch rather than using the coin/token to improve what is going wrong in the current cities
It all comes down to decentralized - scalability - secure.
I would assume they want to keep the scalability and maybe security (my guess) and needed a type of coin to fit perfectly in the future created mini-metropolis ecosystem.
Also a city need facilities like water plants, electricity, services, public institutions etc THAT WOULD ALSO USE CRYPTO! Might be better of building from scratch than move all businesses and public institutions on crypto. Maybe if they see it's better, they will follow...who knows?
Let's see if a crypto utopia is feasible! I really hope so