Thanks for your advice!
The idea of BrightFarms is very similar to ours. Like you said, we are thinking about setting up the farm outskirt of a city or inside. We also recognise that the technology is still early stage and is not economically profitable. So, we would like to maintain lean manufacturing by investing minimum requirement, but update later following current technology development.
We analyse several crops profitability, but salad vegetables like lettuce is not profitable at all. If we can grow some "higher" plants, we would like to. I saw some articles regarding Sharp, Japanese Company. They grow strawberry in a vertical farm in UAE. I don't know whether actually we can grow such a high profitable fruits and vegetables.
Anyway, thank you for your advice. I would like to keep getting touch with you.