How do I match the crop to my land size, 2 acres versus 20 acres?

Land size should change your whole strategy, because what works on a small plot can fail on a large one and the reverse. On small land of a couple of acres, go for high value per acre crops like vegetables, spices or a fruit plus intercrop model, where intensive care and hand labour are possible and even a small area gives meaningful income. On large land you usually cannot give every acre intensive attention, so a mix of mechanisable field crops, with maybe a small portion in high value crops near a water source, is more practical, and rotation and bulk marketing matter more. Labour is the deciding factor, vegetables need many hands per acre while cereals can be machine sown and harvested. Marketing also changes, a small farmer can sell vegetables directly in the local market, while a large grower needs assured bulk buyers or mandi tie ups. So plan small land for value and large land for a balanced, manageable mix. Work out the labour you can arrange and the buyers you can reach, then match the crop, and check feasibility for your district with your KVK.