You're welcome!
Updates: CX is here! Overall, still really happy with the bike.
Issue: I'm not sure if it's headset related, but I have an issue where the stem loosens up over the course of a 2 hour ride, especially if it's a bumpy washboard gravel ride or a single-track ride. From reading other forums about this topic, I think it may actually be the integrated handlebar stem clamp that may be the issue. I'll keep playing around with it. I upgraded the compression plug to a 90mm unit which seems to help, but overall, the system doesn't want to stay tight; the standard compression plug keep creeping up the steerer tube about 3mm. I also managed to strip out the stem hardward, so I'll have to get a better set.
Tires: I also upgraded to some 40mm Pirelli Cinturato Gravel-M tires since the PP38's were just not gripping enough for me off road, likely since I'm used to 2.4/60mm MTB tires.. These definitely solve that issue. BRR says they roll slightly slower than the PP38's, but I think it's negligible, and the cornering speed is only a little slower than my xc bike!
I also did a CX race with it. I took off the 48T chain ring for extra clearance, so I was left with a 1x: 31 x 11-34, which was plenty for me at my current fitness level. I'm still getting used to bunny hopping on drop bars, but overall, the frame is nice and sturdy! The headset and stem were a little rattly at the end tho, so I'll keep fiddling with it.