Hello to all

I have an appointment with a car owner tomorrow for a hire purchase arrangement,i please want to ask for advise from experience Uber/Taxify driver's in-house to advice me on the best type of agreement to make with the car owner,the car is a Toyota Corolla 2005

The advise i seek are
1, What form of agreement do i agree with this car owner?
2, What total amount should i agree to pay and over how many months or year?
3, What remitting agreement will be advised,i mean is a weekly or monthly type of remitting agreement?

This is my first type of appointment for a hire purchase, please all advise will be honestly appreciated