Since you are already adding a temp sensor, it might also be worth switching that to a combo temp+humidity sensor to guage if moisture is getting inside the enclosure. Combined with a desiccant pack, it would be easier to set a notification threshold based on internal moisture levels getting too high.
Also, since EMI reduction is important, and personally I’m putting my electronics inside an aluminum enclosure inside the V2 tracker box, you might also consider putting the temp+humidity sensor on a wire-lead which can live several inches away from the main board. At some future date when the tracker box enclosure is more stabilized it might be possible to do without the humidity sensor though. Just some food for thought.