What Vigil says is true, almost every hopeful begins from the ages of 5-10, since the Jedi order rarely takes on older students under their watchful eye, since their " cup " is full after a certain period of time and they are then beginning to be a liability.
It would be prudent to change your application accordingly, and " empty your cup " so to speak when it comes to your characters´ knowledge and experience, combined with the age you have chosen for him. Council permission is needed for characters older than 10 years old, that possesses any kind of advanced knowledge.
So yes, please rethink the character concept you had in mind and rephrase your application in a more valid manner. Thank you for reading, and I hope you have a pleasant stay in DAJ.