Isn't the whole point of the suicide burn that it uses the Oberth efect most efficiently? Ie: burn as low in the grav well as possible. I agree that skipping points 3 and 4 is the best way to go, however I don't understand why you can't just use the method I described. If you have the smallest possible horizontal and vertical velocity (relative to the Mun) when you enter the Mun's SOI, isn't that the most efficient way to land? If you're on the edge of the SOI, the best speed that you'd want to have is zero, so that you'll only have to cancel out the kinetic energy you get from falling to h = 0m