Lazy? It is simple https://www.youtube.com/watch?v=UdlJCv7pnF0
According to your graph the 10m is too low for that link - the 1-st fresnel zone has obstacles and if you happen to have any trees/forest then it may be blocked wholly.
Surely will be available a local manufacturer? It takes a high gain antenna. At least 24dBiunfortunately in India we don't have Jirous available.... and nor do we have high quality antenna and enclosures available locally ultimately importing them increased the cost drastically
You can try ithow about using an SXT with reflectors ??
people have mixed reviews.... very complicated to figure out....You can try it
I have no experience with this