Read again the comments from JB007.
If you want the FATPL you will get it. I started the process around at 37 and have enjoyed reasonable employment fortune. (turbo props + jets for the last 5 yrs) However many of my peers were not quite so lucky and one or two never flew beyond their IR, due mainly financial reasons, not aptitude. There are a lot worse jobs out there (but none that you have to shell out so much money for), but a job it is and probably like your present occupation, it will often be routine. Be very sure and of course factor in the family/financial implications.
Having said that, I wish you the best of luck if you do go for it.