I think you should concentrate on your current job, while study some enterprice management courses/materials to increase your knowledge in this field.
The main reasons for this are:
you are with top 500 in the world, that is not a bad job;
you are doing management already;
you have training in phylosophy that will be good in thinking and expressing your points;
working in enterprises may be better than other types of management, given your current situation that your training so far is not in management;
you are in second level provincial cities and it is easier for your wife to find a job there.
It also helps with your housing option with the current job and location, that is, having income and in a city where housing is not very expensive.
Of course, you need to come up with a practical idea for and solution to your housing issue.