In terms of ball girth and instep girth, some excess is allowable, but how much is dependent on the individual's foot and the specific design of the shoe. It's generally recommended to err on the side of caution and choose a last that is slightly larger than the foot measurements, as it's easier to adjust the last to fit a smaller foot than to enlarge it to fit a larger foot.
Ultimately, it may be helpful to consult with a professional shoe maker or cobbler for guidance on choosing the right last for your specific needs.