Thanks all for the advice. With my weight and level of riding, I just won't overthink it too much (which is a bad habit I have). In obsessively surfing the net on the subject the past day or so, I see gravel bikes outfitted oem with both mtb and road looking rotors. I also saw that some tdf riders used Shimano XTR rotors recently instead of Dura Ace, for what reason the author didn't know, but apparently with no ill effect. There I did overthink it, but will stop now.
Thanks again.