@pepedocs- welcome to the forum..
a) EOI 70 pts is a very high score.. current invitations have atleast 65pts in their EOI.. that means you will definitely be invited..
b) if you apply for a state sponsorship (or if required by your occupation based on SOL/CSOL), then automatic visa invitation na agad yun, once approved by the state..
c) Finding a work, related to your occupation is really dependent on many factors (your skills, location, if it is really in demand, industry, etc).. you and your wife are both skilled, so malaki ang change na makahanap ng work kahit isa sa inyo... especialy kung wla p kayong anak..
others would work in different fields, and then after few months/years, pag may AU experience na, makakahanap na ng work na gusto mo talga..
pwede din naman, after visa grant, isa lang muna ang pumunta sa AU, while the other is still working sa Pinas... pag settled na ang isa (with atleast a good paying job), then pwde na sumunod the rest of the family..
read other threads here, there are inspiring stories.. goodluck!!