Not sure how long they take, but Google could give you a rough idea, but I would guess many months. As for care, treat like normal and don't repot. The pod will grow quickly to start with and get to full size rapidly. It will sit dormant for some time while it makes seeds inside the pod.
You should start planning who is to flask it up, and whether they want dry seed or green seed. They will tell you the time span for either.