I've done the 12 tests monthly for over a year. I usually leave out the rope climb, since there's no climbing rope near me. I may try doing the rope pull ups from the spreadsheet you posted.
You don't NEED to say "I'm a level 12, level 24," etc. A good goal needs to have some measure, though. How fast is your 100m dash? 17 sec? Try for 15 next month. etc.
The 12 tests are decent enough. Hebert scattered other tests through his books - hiking, throwing at a target, diving, etc. Other tests that could be useful would be things like vertical jump... or Erwan's requirements for "Expansion"
Some things I've found... The 12 tests are supposed to be done in 1 go - that's rough. I mix up the order so I'm not doing all 4 jumps in a row, all 3 runs in a row. The high jumps are very time consuming - adjusting the marker, jumping, etc. The shot put is the average of both hands

Also, don't do the running long jump barefoot into grass... and land on your toes.