First hurdle is paying for your licence - bit by bit.
The second hurdle is earning a living whilst maintaining a family and looking for a flying job.
The second hurdle is the one where I have witnessed several good blokes drop out.
Even with a flying job, chances are it will not be in the city, and chances are it will not pay enough to simply cover rent and put food on the table.
Can be done - won't be easy though. Possibly make your relationship with the Mrs either stronger or destroy it. One could probably say that without her full 100% encouragement and backing, a successful outcome would be unlikely.
Being creative to pay for your licence is actually the easy bit - what comes after is really what needs consideration.