So, I had an idea.
Why not create a save in which I could replicate every single real-world launch, on the day it happens?
The only mod I'll be using is Tweakscale. As I play, I'll be saving each part I build as a subassembly, so I can quickly replicate any launch vehicle in any configuration. Thus, most of the building time will be payload-oriented.
Running list of launches:
March 1, 2018: GOES-S, launched on a ULA Atlas V in 541 configuration.
March 5, 2018: Hispasa