I am not sure what you really have available on hand
Read the Carrier Load Estimate book. Or the ASHRAE as a start. At least thats how I started middle east region too.
What software do you use for your load calculations,
By the way when calculating load always refer to country
requirements on weather profile its different than that mentioned in ASHRAE (Higher Values) so it causes problems.
Name the country and I can send you the weather data