I have been making small changes over time to the sizing guide but haven’t had a chance to wrap it all up and release a new version.
It is available here:
https://www.sap.com/documents/2017/02/363ddfab-a77c-0010-82c7-eda71af511fa.html
Feel free to contact me with any questions or feedback! Check back on that link frequently as new versions will simply replace the existing version.