You really have a great ambition and I see your entrepreneurial spirit I wish i had the capacity myself to empower you to achieve your desire and ambitions, but i will only try as much as possible to give you my own piece of advise, and I hope it will be helpful.
First I will encourage you if you haven't done that already to get training on the exact agricultural activities you have in mind be it crop farming or livestock, having a very sound knowledge will go a long way to help you achieve your goods and you can aswel apply for loans even from NYIF.