Take the Command, do 18 months or so and then try to move, DEC is then more probable.
14-16 days off a month, you’re doing very well.
Commuting will depend on who you work for, but generally not unless you get a long haul job. There is an unmentionable low cost Irish airline that has a 5 on 4 off roster pattern, so you could commute on that, but it’s far from ideal to do so.