They seem to take poor weather condition into account as they reserve an amount of power to keep the link up and stable (equipment would be capable of pushing up to 75km)
Those were data from first tests they did, might be interesting if they can confirm that in future updates.
I would pick a word or name, and for each letter of the given word you create a sentences beginning with each letter. It doesn't need to make sense, you just need to make it easy to remember.
Bonus point by adding a number (like a year date related to the word/name) and by separating each word with a special character.
For example : Alice
Amendment%Liability%Indicates%Cute%Energy2006
One can also take one skill out of the list as goal to achieve.
I don't think an engineer is able to be perfect in all skilset. This kind of list should be seen as an inspiration and challenge you in the skill we are lacking from.