Sound effects in my film

There are many points in my film that i am going to incorpriate sound effects, these include;

1. Using a 'ping' sound when the golf ball is been hit
2. Using possible tire squeeling sound for when the car is comming up the ramp, and when the car comes to a holt.
3. Using the sound of empty beer cans hitting the pavment when the girl is getting out of the car.
4. Using the sound of running water when the man is urinating in the stairwell.

I feel using these sound effects will really add to the film and make it sound more realistic.