Probably don't need the body levers or L-sits, unless those are weak points.
Once you start working the more advanced variations of most of the above progressions you get lots of core anyway. I don't do any specific abs work anymore albeit I could have a much stronger core if I did. I can do a couple ab wheel rolls without having any core work.
Other than that you can reduce a bit more if you want, but it's relatively balanced which is why I wouldn't want to mess with it unless you need to cut some rest time to get out of the gym faster.