Coffin is the last thing I go for. On default settings my hi score is 367M and it takes over 262M to get your initials up on my Met Premium. Here is my strategy:
Get the super skill shot that completes a shot. Then complete that hurry up. Then try to complete at least one more hurry up on the first ball. Best are right ramp, graveyard, left ramp, in that order. Picking off graveyard shots is pretty easy from a trap on the left. Once I have a couple hurry ups completed, then start Sparky or Graveyard MB. During MB concentrate on the hurry ups that you have completed to work towards your first CIU. When you come out of MB, trap up and check your progress towards CIU in instant info and then work on completing it. When you start CIU, go with Fade to Black on the premium(spinners) or For Whom the Bell Tolls(pro).
During CIU, it's important to start 2x scoring and keep it going with repeated shots to the fuel lane. It is great if you can have 2x going during CIU, but it's imperative to have 2x going on your collect shot if you want the monster scores.
Important! If you are close to getting CIU started(remember to ck your instant info) AND you are also close to starting one of the MB's, do not start that MB! That way when you come out of your CIU mode, you can quickly start a MB to start building towards your 2nd CIU mode. Another thing that many people speak about is not to complete all your hurry ups and start Seek and Destroy until you are done with at least 1 or 2 CIU modes. If you do you must start from scratch on building up to another CIU mode.
When you do eventually start Coffin, immediately start working on whichever MB(Snake, Sparky, Graveyard) you are closest to so you can stack it in with Coffin.
A few skills to work on. Loop pass from plunge on the SSS to the right flipper. Drop catch on the kick out from the scoop. Live catch on the rebound from the Graveyard.
What an awesome pin. Have fun!