So some easy numbers

At UAL approximate timelines:

LAX: NBFO... newhire or first BiD
756 FO: about 6 months
787FO: 5 years (that’s an assumption that might not hold true)

NBCA: 2025
756 CA:2029
787 CA: sorry not going to happen you will retire around 4000

SFO WB FO in 2023
EWR WB CA in 2038 (you might not be around for it. I just choose somebody in the bottom hundred with your approximate birth year......good luck