Is it permissible to break off an engagement to a poor and uneducated young man in order to marry another young man who is financially stable and educated?

If the sister does not accept the first suitor, there is no harm for another suitor to propose to her. However, if she accepts the first suitor, it is not permissible for a second suitor to propose unless the first one abandons the proposal. It is permissible for the sister to annul the first engagement and accept the second. The criteria for choosing a husband should be his religiosity and character, while also allowing for consideration of other permissible matters such as knowledge and wealth.