You have the freedom to invest individually in teachers; ensuring that their development is target driven to support their personal growth.
You may choose that Plan A delivers training or coaching to your teachers to drive forward your school improvement areas.
You may chose to invest in your teachers in groups or individually.
Which ever you choose, you need to retain your staff and ensure that you have maximised support for their wellbeing. It will make the biggest ultimate difference to the progress outcomes of your students if your teachers are motivated , stable and well trained.
Don't invest in job advertising, invest in the teachers who are in your care.