I have decided on Davao. I'm the OP.
I'm going to stay in Davao (in the top 10 safest cities in the world) and aiming for 3 months for now.
I found a condo for only 13,000 peso a month and that includes all utility bills, internet, air con in room, has a kitchen in my condo etc
I'll make a post somewhere on 8ch and post photos of my journey soon :)