Think about where you'd like to be in 5 years. Saving 1000 pounds a month may sound great. But what is this job going to do for you? How will it add value to you?
Unless you plan to take the $$ and start out on your own.

The package is great for someone starting out. As for rents, you can always share with someone. A 2nd hand BMW 3 is about 80000 riyals, so you can afford the car.