Just for clarity.
After receiving the 12 month B.B privilege you are allowed to stay for another year without leaving the country (total, 24 months) but you will need to go into a B.I office to secure an exit clearance before leaving.
If you would rather not pay the tourist visa 9a fees for 12 months, then simply leave the country with your Mrs to places like Thailand, Macau, Hong Kong, etc and fly back the next day and request a new balikbayan stamp to start yet another year free visa stay in the Philippines..
Lucky you!!