Hi
I was in a similar position to you, twelve and a bit years in the job and working towards a 2/3rds final salary pension after another 17 years.
I'd been flying privately whilst in the Police and used my salary to pay for my PPL(H). I wasn't enjoying the job as much as I had used to, what with the endless paperwork, lack of support from the courts etc etc.
So I weighed it all up. Carefully. I spoke to my family and my friends both in and out of the job. I resigned. I moved overseas. I did my Commercial Licence. I flew whenever I could.
My main point to you is this: I have lost count of the number of police officers with whom I used to work and who are now approaching retirement age who have said to me since I left " I wish I'd done what you did when I was your age." If it doesnt work out for you at least when you get to 50 or 60 you can be satisfied that you gave it your best shot!
A famous person once said " Far better to regret something you have done than something you haven't"
All the Best and in the meantime
" Be careful out there."
heli_spy