You are focusing too much on the wrong things.
If her best friend likes you then it's going to be easy as fuck to get the notch.
Gay men can also be excellent wingmen.
Her friends can cockblock you in big ways if you are unable to isolate her, it doesn't hurt to have them on your side.
It's the difference between her friends telling her "You go girl!" vs "Omg don't leave with that creep, stay with us!"
If her best friend likes you then it's going to be easy as fuck to get the notch.
Gay men can also be excellent wingmen.
Her friends can cockblock you in big ways if you are unable to isolate her, it doesn't hurt to have them on your side.
It's the difference between her friends telling her "You go girl!" vs "Omg don't leave with that creep, stay with us!"