I did some of my flying in Aviatour. Back then in 2008/2009 in was the best schools in the Philippines. They had a huge fleet of 40-50 with students from more than 30 countries.
But the things changed drastically in 2011-2012. The owner died of a crash and the school went bankrupt. They have re-started the operations again, with not so many aircrafts as before.
I am not sure about the AAG-Aviatour contract. But I have friends who are associated with aviatour. one of them is working as an instructor and the other guy is renewing his license.
PM me for their contact nos names etc. You may talk to them directly.
schools in Philippines are notoriously famous for charging a lot from foreign students. I would suggest you to first get enrolled for a CPL-IR-ME course with some school and then approach AAG or any other academy for type rating.
Also try to inquire - flyfast inc manila, AAA Iba/manila, Omnia aviation Clark etc