I not understood your post fully, but I think you mean you want to do activity with less labour requirement. Labour availability is big issue in India, though we have large population.
Shall I suggest that you grow jasmine in about one-fourth or one-eighth acre close to your farm house. Fresh jasmine flowers have a high market value in Tamil nadu in wholeslae market going for 150-750 rs/kg.
Plant it close to your house so that you can supervise it easily every morning plucking.
Jasmine starts to yield from six months itself for about 15 years.
In six months, you should get yield of about 100 kg from one-fourth acre for remining year.
As plant matures, in 4th year onwards you should get minimum 2-3 kgs daily.
If it is one-eighth acre you can do all operations in it in one hour every day.
For one-fourth acre, one or two farm workers need to spend maximum four man-hours per day.
You can inetrcultivate with marigold which will act a pest control agent for jasmine.
One of my known person in Karnataka doing this. Apart from plucking flowers he wife also makes it in garland and they send it to mangalore market. Sometimes they make 5000-10,000 or even 15,000 rs in one day if some festival is there, normally they make about 200-500 rs per day from one-eighth acre. However, please note, on festival days this person sell in retail market himself and does not give garlands to retailer/wholesaler.
I may also suggest you try some form of permaculture in about 1 acre with one-sixteenth acre pond. If you check your local KVK, they can give you details of plants in high demand and suitable for sivagagna area. Then suitably layout one acre permaculture crops like moringa (you already grow), gourds, yams, lotus, brinjal, colacassia, beans, sweet potato, fish, duck, chicken, etc. (not all gourds, brinjals, beans, etc are permaculture, you have to check which type, I dont know there english names. also plants like colacassia, etc will spread. indivdual plants will die, but new ones will be produced without replanting) A person I used to know in Thane, maharshtra who was working in private company does this same thing in one or two acre land in about 10-15 hours per week. He spend about one or two hour in morning, goes to work and maybe spend one hour in evening.
Also, if you can grow anthrurium, heliconia, other flowers, etc in your shade house it will be profitable.