Best Practice for Shopify Markets + Klaviyo

Hello People,

I have found this post: 

The recommendation here is to run multiple stores + Klaviyo accounts… Shopify Markets is in Beta now, the benefit is to sell to multiple markets from one store. Therefore, the recommendation seems to be a bit outdated, since the benefit of Shopify Markets is to sell internationally from one single store. As far as I understood, it is more ore less the same technology and options Shopify offers today but bundled differently. 

We currently run our store in EN but are about to add DE as a second language. Customer marketing+forms and so on has to be bilingual too. 

Is there a Best Practice approach how to run (lists, flows, forms, content, ...) in multiple languages without unnecessary overhead?

Thanks!