upekkha100: Yes. What you stated is correct.
On the last one, the sequence given in the sutta is: kāyānupassanā, vēdanānupassanā, cittānupassanā, and dhammānupassanā.
However, one can actually do all of them at the same time. Being mindful involves first three, and that can be done anytime.
Dhammānupassanā is best to be done when one can contemplate at a quiet time.