As long as you got the context of knowing which is which for adding the Yo-kai in, you should be good to go. The editor is mainly for those who are familiar with the series as a whole, and newcomers won't get it at first unless you know what to do.
Not sure. But when I tried using the final official release on the UK/AU English version, it kept corrupting the save. (And this was the one with the English names.) Although, I also have the "second-last" version before it, when it was still all Japanese. And THAT still worked, no problem.
I...
Yes, it's the normal NTR CFW v3.6. But didn't you read? It's the ENGLISH version. German version is a different one in of itself. You'll just have to wait until someone ports those ones for the German version...
Oh, and the game has REGION LINKING...
So now we wait two more months to link our US data...
...but at least this is the modded Sukiyaki we waited for...
I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi