Have a look at this site - The global site for cruising sailors — Noonsite
As I too would like to embark on a sail to the Philippines, I've been doing a bit of research on best passages from Australia
A lot seems to suggest sailing around the east coast
of Papua New Guinea
(via New Britain Island, Bizmark Sea), Palau
, then the central islands of Philippines (Visaya).
This is to avoid possible pirates around Indonesia
I haven't finalised my inevitable passage
yet. Still a long way to go, but the above site has a lot of tips (including best port(s) in Philippines to get your arrival paperwork handled etc).
I hope that helps.