Saudi Family looking for helper

We are a family of 3 members, two are required special needs as they are disabled people. My father 75 years old he cannot move due to a stroke. My brother 32 years old he cannot move due to Multiple sclerosis and my mom she is ok. We are offering a private room with Wifi + food allowance which is 50 USD per month separate from a monthly salary of 500USD + Financial incentive based on performance 500USD yearly + a fly ticket every two years.