I used to ship a lot of things but normally not internationally, and I've had much better success than you have, luckily. I think you will be good with the measures you put in place as you shouldn't be able to tell what the package contains when handling it and I think that is the main thing. I've also spent a lot of time on the DNM reddit so I know how the vendors do stealth as well.
Can't wait to see @papa-pepper ''s opening video, I'm sure he will enjoy those beauties!