I don't think that's smart thing to do, to set deadlines or any sort of dates when you should get your own local board. Since there's been only one local board created in the last 5-6 years, it's obvious that's not something that happens often and just because Nigerians got it, doesn't mean that guy will gey one soon too.
I am saying this not to discourage you but instead not to get disheartened if you don't get on local board soon. Imho, the best course of action is tomorrow just keeps being active, keep your thread clean of spam, bump this thread every once in a while and eventually you will get your own local board.
This is very much true that there is no guarantee when we will get our separate board. The only thing we can do is continue our moment in legitimate manner. Already we are among top 10 most active communities here and with time we will grow further. I would say our request is like Bitcoin, nothing can be said about its accomplishment.