Thank you for your Question
It is entirely upon a man to decide for his marriage. He doesn’t need to obtain the permission of his father and or parents.
In this case it will be his choice to marry you or not!
Kindly refer to the link below for further understanding:
Regarding your second Question. The decision is entirely yours! You may want to write down the pros and cons of marrying him. See which one outweighs the other and that shall help you decide.
Make sure you spend a lot of time Speaking to Allah swt, and InshaAllah you shall see guidance and progress