Greenhouses and hydroponic systems import request Comoros Islands

I would like to purchase a greenhouse with a hydroponic system,the drip system.The trough method to be specific.We plan on growing tomatoes and cabbage. Any advice on the suitable hydroponic system for the above crops would be appreciated.

The project is to be done on one acre of land.We would like the land to be divided into two greenhouses each with a coverage of half an acre. How much would this cost.

Your response would be deeply appreciated.