I can understand what you are going through. I changed after 30 yrs in main-stream IT to SAP, 11 years ago. I appreciate your situation.
Choosing a course depends on your interests and goals. It also depends on the locations of your choice and the scope in those locations.
Create a spreadsheet with what you would like to do, musts/desirables, goals – long term/sghort term, the criteria, locations, etc. Then try to see what fits.
All the best!