It was on an assesment, when years ago the evaluating pilot briefed this for a mid-way case such as you ask:
6° NU / 60% N1, even on the EPR engines, rule of thumb for level flight. This step is embedded in the QRH tables but it takes some time and effort to read that out.
Even today the tables are not the best design, namely the clean table is organized differently from the S+F one.
In real life, I would not hesitate to use 6/60 to stop climbing if that was needed. The SIM may not be the best place to start showing own memory items.
Airbus procedure covers your dilemma well, as it is. Check the blue diagram for decision making from the FCTM.
= ignore/remove FDs, don't change P+P, pull QRH and 'level off for troubleshooting' using the table.
But it is 6/60.
