I think if the worst case scenario works for you, then you should do it. then you would be pleasantly surprised if you are able to have a schedule of less hours in any given month. I think counting on the ability to consistently drop trips every month to give yourself more time at home is setting yourself up for disappointment and disillusionment.

I have known people that commute from Europe and Asia to the USA for airline pilot jobs. once they are used to it and have enough seniority to make the best of their schedules, they are happy with it. it isn't easy to get to that point. is it faster at JetBlue than elsewhere? I would seriously doubt it.