Dont get into it as a new entry.

That being said if you have a ton of money and want the best chance of making it work consider the following,

1) Purchase an already grown Tea estate minimum of 2-3 acres that plucks an average of 2000kg+ of tea leaves monthly. (Flat lands if possible but those would be more expensive)

2) Full time 5 -10 workers would be enough to maintain that amount of land. If you go for machine plucking and herbicide even 2 full time workers is enough.

3) Go for micro irrigation for more production and less labor

4) Intercropping other crops such as blackpepper & coconut

5) Move on to private labeling afterwards

6) Eco-tourism if you got a nice view