Card scraper is on my list.
I know I would use a card scraper to fix the slight tearout around difficult grain patterns, but didn't think it was going to fix my problem at hand, specifically the chop marks from my plane, and the panels not being flat enough to start with.
My thought is for this project, given that I am struggling to learn the new planing skill, that adding the new card scraping skill probably wasn't as good a solution as sanding, which I already know how to do.
I did all of my initial milling at a local community woodshop, where they also have a 24" belt sander. What I didn't do was bring my panels back after glue up to give them a fresh surface, and my panel glue ups were not perfect. I may do this next time, which would give me a better surface from which to do my prep work. I definitely paid for this when cutting my dovetails.
Over the last few days I have prepped and glued up everything.
I ended up using ROS at 100, 150, 220, followed by a thorough hand sand with the grain at 220.
Next I will have to start a smaller project and practice my hand plane (and card scraper) skills. As always, I am already over budget and behind schedule on this project, so I look forward to finishing. (the project, not actual finishing, which is terrible)