H44
I think the 15+ years to command may be coming to an end due to the fact that it was five years ago that the age discrimination law came into effect. Saying that don't expect command within ten years tho.
I like it here, it's varied, or was as I've now just joined the 787 fleet. I think if you plan to be part time for five years then you won't be disappointed if it happens, I don't think you would be but sadly don't have the crystal ball. It's a great bunch of people to work with hence why after ten years I'm still here.
Ultimately tho the choice is yours and the considerations you have to make are yours alone.
Whatever you chose good luck.