At the start of game your product will start at '30 quality' and you will have sell at a loss, still no problem because your farms will make a profit. This strategy will never fail and within the decade you will lead in the frozen food section with a turnover touching 2 billion. The extra cash can then be used to enter the bottled milk industry (remember your second medium farm still has scope for an extra produce - MILK). Just R&D bottled milk and glass and within the next 5 five years you will be raking in 200-300 million just from this product.
This is a perfect cash cow business giving you enough to expand into other things. Try it