The kit from R1 covers all the necessary keys for the German layout.
Only mistake is that the key with * + - on it should be * + ~
I prefer Oblotzky's suggestion though because I think 3 legends per cap are ugly on SA.
Thank you a lot for paying attention to a minority like us NorDE users, thesiscamper.
(But hey, 9009 sold like 70 international kits, right?)
I hope this will be happening soon.
And if the information on PMK is up to date ("SA two-shot sets - 5 to 6 months depending on size"), we might even have the set before 2019!