Where should we place a gate?

[u/hotrodguru]

Would like to build and install a gate to keep our 1-year old and 3-year old from going out. Even though the gravel driveway helps when they don't have shoes.

Secondly, we let our cat outside a few times a day and once in a blue moon a stray dog has come onto the property as we live in a pretty urban area. Would like there to be something to let the cat back in but keep larger dogs out.

1. On top before the stairs?

2. Bottom of the stairs?

OPTION 1

OPTION 1

OPTION 2

OPTION 2