My wife has the same setup for accounting and she only has a small business. Actually she uses two CPA so she has three sets of eyes working her books. Routine bookkeeping is local and one CPA is a friend to occasionally look over the stuff compiled and then the second CPA only once a year. If you are required to file AIF with ITR, your CPA has to be accredited. Her first one is not accredited, hence the second one in her instance.
In Indonesia, we also have a “second CPA” who audit the “first CPA” once a year, but it is not mandatory. Moreover, big companies have “Tax Accountants”. We don’t have tax accountants as our company is not big, but we use the services of a “Tax Consultant” who works/coordinates with our accountant (the first CPA) and the book-keeper. Taxation is a complicated issue in Indonesia, hopefully it is less complicated in the Philippines.