At 29 you have plenty of time.
The oldest person I knew to get a job last year was about 46.
Age is not so much an issue, your personal circumstances can be.
The thing to remember is when you do qualify the starting salaries can be quite low. So the problem is not so much raising the cash for training it is trying to survive on a turboprop first officers/FI salary when you do qualify.
The other thing to consider is your wife prepared relocate anywhere for you to get the first job.
It is easier for a single person who is forty and financially secure to get a job than someone who is thirty with commitments.