Maize Milling Business

I am on the plans of starting my own grain milling business at selibe phikwe, botswana.First i want to do sorghum milling and after some few years of experience and knowledge i will proceed to maize milling.The reasons why i want to start with sorghum is because the suppliers are available locally and the customers demand is is high for sorghum and milling sorghum is generally cheaper than.