If I was earning good money on a mine site and had a new family, I would probably buy a house and pay as much of it off as possible over the next few years. Meanwhile I would study a degree in my down time and look at a career change once that was complete. If you do a degree in an aviation related field you could move into management/operations/similar where your CPL would complement your work. Just another option.
Importantly, if your wife isn't as happy to commit 100% to aviation as you are it isn't really a viable option.