Q8,
You have listed the two options and it basically breaks down as to whether,
Option 1, you want to keep flying.
Option 2, you want to stop flying and have a desk job.
So which do you want? If you want to keep flying then go for option one. You seem to have age on your side certainly. If it doesn't work for you in the 'new' carrier then you could leave and work for another airline. Remember if you stop flying and work on the ground then it is always a litle harder to get back into the skies due to recency etc.
I'm sure others will follow with more sage advice. As for me?, I'd keep flying.
Good Luck with what you choose,
V3