Pitch + power = performance
The FMC computed N1 value is given to ensure minimum certification performance-should you lose an engine.
Pitch + Power = Performance
The N1 computed value is the power portion of the equation. The flight directors will command the pitch portion. What you actually get depends on where you stick the nose of the jet, and whether you have met the other parameters (like flap settings, gear position and correct data entry).
I’m with you, if I am above V2+20, I would pitch up (trade airspeed for altitude) just like you said; before cleaning up the wing.
It’s the airline’s company and jet; they pay me to show up and move the metal from point A to point B safely and in compliance. I’ll fly it the way they pay me to fly it (unless there is a really good reason to disregard their guidance).
The fact that you are thinking and asking the questions shows you have your head in the process. That mind set and hard work will pay great dividends when you go for your command.
Happy flying!!
Respectfully,
Northbeach