[Gardener2]

I may not be entirely understanding the goal, but what about using start dates? If a task is due in six months, and you know that you won't even consider starting it until four months from now, you could give it a start date of four months from now, and then filter out tasks with future start dates in your everyday perspectives.

In fact, I'd recommend using start dates, instead of due dates, for all tasks where you want a fairly flexible date marker. I prefer to confine due dates to situations where the stuff is really, truly due, so that I know to be concerned if I see even one task coming due or overdue.

Gardener