When you talk about influencers you need to be specific. This influencers you need which social media are you targeting, also I have to say if your project is right and has good intentions the that's a great choice. The Crypto-currency market in Nigeria keeps getting better. Now to get real influencers on social medias like Twitter you need to be ready to pay more. They are there you just have to do your research but I don't think you should have much of a problem.