Great feedback. I think the RCBS primer is the one. Some mitigating information on chronos. I have the privilege of living in Utah. Open desert shooting is only 45 minutes away, so some of the downside in set up isn't a worry. I looked at the magnetospeed. Sure seems like a neat piece of gear. I was honestly just trying to do the chrono on the cheap. Do you ever use the magnetospeed at indoor ranges?
I have the original Magnetospeed V1 . . . bought it on announcement day because I hated the hassle carrying/using my CED M2 lol. My MSpeed does not attach to pistols, even those with rails. However, I have used it on rifles at indoor ranges - that's one of its advantages - just for the purpose of checking velocities.
It flat out works, all day, every day, anywhere . . . as long as you can attach it to *your* firearms. The newer versions expand its reach. But it changes POI which makes some methods of load development difficult.
However, given your shooting venue, the optical chrono is probably the right bet at this moment. With the ability to set it up and adjust it fairly easily, you will be able to run most if not all of your load development work through it.
While not strictly necessary, I find having the data on ALL load development rounds very useful, especially to provide a reason for some unusual spreads lol. Using my MagnetoSpeed, I make extra rounds at intervals to get a small sample of velocities. Helpful, but not as good as I'd like.
That's why I have not upgraded the MagnetoSpeed, and have a LabRadar on order. /fingerscrossed.
ETA: If you consider a progressive press, I'd advise a 5-hole press at a minimum. For practical purposes that limits you to a Dillon 650 or Hornady LnL AP. The new 5 and 7 hole RCBS presses are just out and unproven, and not worth taking a chance on when the Dillon/Hornady work very well.
I have no concern about you starting with a progressive . . . you can clearly RTFM

. But there's a lot to learn about reloading and letting your own preferences develop before choosing. At the end of the day, a single stage press is always useful no matter where you go from there.