Its probably fair to say that, although it won't be purely linear. You will occasionally have a few bid on top of you for QOL. But the 88 and the 717 should provide the best advancement in the short term, followed by the 73 and 320 in that order I'd guess.

As for 88 vs 717, that's hard to guess precicely. One thing that could make the 717 a little more challenging for advancement is how the company decides to deploy it. If they open more bases with it (depending on when) it could slow or stop advancement in current bases for a while, especially when the fleet is small like it is now. Even with all 80 something on property, if its divided across 4 or more bases it could get a bit more limited. Either way though it should be a good choice like the 88 is for the most rapid advancement.

You will really start to see it move a year or two after you start, as new hires just senior to you see their freezes expire and guys get pay table hotfoot and immediately jump to anything a buck an hour more (I've seen guys bid away from their home base to inheret a tough commute for something that pays around 10/hr more on paper! ) but if you can stick it out past that point you can ride the wave to the catbird's seat and sit fat and happy, ready to pounce on your ideal seat/seniority level once you can hold it.