I no go advice you to buy Bitcoin and leave land or buy land and leave Bitcoin. Wetin I go tell you be say if you get reasonable amount of money, make you invest in land as well as in Bitcoin, because e good to diversify your investment. 

Bitcoin investment sure die and e go bring better returns if you hold for a longer period of time. The only problem wey dey, nah to keep am safe from scammers and hackers. For land matter, e depend on the location. If the land dey better location, the value go appreciate quick quick, but if the location no make sense or development no enter there, e fit no appreciate like that.