Honestly you could have Haiti as a first world country with a POD in the 1950s. Its absurdly easy to have the place be less bad than OTL. Frankly I'd argue the Kingdom of Haiti would have been much more prosperous than OTL Haiti for the first few decades since it managed to restart sugar and coffee production, earning it enough hard cash to modernize a military apparatus (see all the forts left over in modern day Haiti) alongside receiving diplomatic relations with Britain and the new Latin American states. If it were to take control of the Southern State of Haiti, then its in a position to recover from the Revolution in a few generations (albeit as a Russia style oligarchy). A Bokassa would be a dramatic outlier not consistent at all with Henri Christophe's personality.