Hi Donald, welcome. Good you’ve found ways to bring together your more advanced finger picking with your less advanced strumming. I also try to combine both. I would say my strumming is better than my finger picking, but also I’ve also leaned to practice it more to sing along.
About your question about minor pentatonic fingering, this conversation about minor pentatonic patterns could be interesting for you and of course there’s a link to the actual Justin Guitar lesson about it.
Minor Pentatonic: The 5 Patterns - Discussion
My understanding is that if you move the pattern from fret you’re changing of key, but if you use the connecting patterns on each side you’re extending the scale but not changing the key. My understanding also is that each pattern can be played using the four fretting fingers and that the position of the fretting fingers on the fretboard changes only when moving from pattern to pattern. At the end the right fingering can be what better suits the song, but you can look at how Justin approaches this on his videos.
I cannot help you with the question about the chords. Well beyond my current music theory level.
You strumming could benefit from using this tool if you’re not already doing so.
Have fun.