Time to command roughly 15years. Its a random roster with at least 10 days off (9 in february), and at least 1x 4 or 2x 3 off.
You can bid for no single day off and for requested days off, not according to seniority, so you need some luck.
Plenty of part-time options available but absolutely 0% chance of direct entry captains, as there may be around 150 FOs waiting for an upgrade and in 2 years that number wil double.
German B2 is a hard requirement, no exceptions.