Hey Paco,
As said, power feeding is not very good for your snake.
If you are going to feed 2 pinkies I would feed them at the same time.
IMHO, I dont think that it is good for the snake to always be digesting food. If you feed every 3 days and it takes 48 hours(2 days) to digest its food then it is always digesting. When will you have time to handle it?
You should always make sure that it has had a poo before you feed it again.
IMHO,
Jimmy C. I know both way of feeding has worked well for many people. So it's up to you.