Thanks for the Input so far.
I looked at the standard Dvorak Layout, but because German uses a ton of non common characters (ä, ö, ü, ẞ...) it's hardly practical.
I went with a custom Dvorak Type 2 Layout. Since Windows doesn't handle custom Layouts that well, i'm using AutoHotkey to remap Qwerty. Thats working great so far. Plus it's portable
I was already touch typing Qwerty at around 70 wpm, the wish for SA keycaps is more of a feel thing. But that's not that important really.
Since i currently do not suffer from any health problems, l'll be looking at new boards at home. Not worth discussing that at work until i know what i want anyways...
Dvorak is working great though. I'm up to 30 wpm on the most common words within two days now
I feel my brain beeing fuzzy within minutes, but the bursts are getting longer