To start with this kind of investment requires analysis of different factors such as market, water availability, soil analysis and environmental conditions of your locality.
You require a business plan to identify the investment cost, production cost and marketing cost. This will help you to identify the break even point or if the business is viable or not in terms of profit making.
Its important to also have a crop budget evaluating all the cost to be inquired.
On the other side start small and grow big probably you can start with 5 acres and progressively increase in size.