Park the car on an incline, nose first, so gravity assists the draining process.
Consider replacing the motor mount at the same time. Makes the "fifth" pump bolt easier to navigate.
Flush? Nah.
Approach it like it's NOT a Porsche, and you'll be fine.
In conclusion, and because this topic has been covered a billion times... do more reading. More. I.E. Seek and ye shall find.