I think it’s going to take a series of trail and error type of experimentations from your side to see what works best for you. Many people on this forum use the tried and tested Major System to arrive at their characters. Some opt for a First name only approach, others opt to use a combination of First names and Surnames, others still use an “Encoded system” for their PAO where the characters are individuals solely paired intuitively to the numbers themselves. Others still use a Dominic System. There is also a “Letter-Getter” system too. Still others have developed systems based on their preferential choices of how they personally want to encode numbers. Still others have learnt a categorical type system ‘off by heart’ for their chosen 00-99 characters, your choices are virtually limitless. All these variations of systems can be found by “searching” in the “Q” or “Magnifying Glass” at the top right hand side of your screen. I will venture a few alternatives using the number “42” below:
#42 Unencoded (Intuitive) System = Hitch-Hiker/ clue #42 is the answer to everything (Hitch-Hiker’s Guide to the Galaxy)
#42 Major System (First Name Only) = RoNNie, wReN, RiNgo (only use the first two letters)
#42 Major System (First Name and Surname) = RN = Richard Nixon
#42 Dominic System (First Name Only) = DB = DeBBie
#42 Dominic System (First Name and Surname) = David Bowie
#42 Letter-Getter System (First Name and Surname) = DP = Dolly Parton
If you don’t already know there is a link that assists you in finding suitable People by initials (see link below). Good Luck in deciding upon which system you finally decide to use.