After asking this question, I went out to do the shoot. I made several mistakes but also learned some valuable lessons (for me) and I wanted to share them. I was able to get a reasonable sunset to milky way timelapse (see here for results)

As I mentioned, I made several mistakes. Here are some:

1. I miscalculated and the moon rose out of frame.
2. I took too few pictures (1 every 2m, it should have been at least 1 every 30s or 15s, I think)
3. The lens fogged up (which you can see at the end of the sequence).

A quick note about my equipment. I used a Nikon D7500 with a Tokina 11-20mm F/2.8 and a Vello Shutterboss.

There are basically 3 periods in the sunset to stars sequence. The first is when the sun is visible. The second is twilight between the time the sun disappears and total darkness (this usually takes about an hour). Phase three is when the sky is completely dark.

Phase 1 While the sun is settings on the camera I used moved between 1/8000s F4 100 ISO down to 1/500s F4 500s. This kept the image at 0EV.

Phase 2 This is the transition phase. You want to keep it as smooth as possible between phase 1 exposure and phase 3 exposure, which I will talk about later. Here I tried moving from 0EV to -1EV so as to show the sun setting and the sky getting darker. I first continued to lower shutter speed until I got to about 10s, then adjusted to F2.8, then continued adjusting started raising ISO to about 1600, and then did finally adjusted for phase 3.

Phase 3 For starlight exposure, I did not want to get star trails. I checked PhotoPills and it told me not to go above ~20s exposure. So, my settings for this phase were 20s F/2.8 2000 ISO.

Hope this helps anyone else who might be trying the same thing.