The problem with your e3 plan is that you need 10 years industry experience (285hrs isnt 10 years) or a degree (or equiv) in the field (your degree wont cut it) or a combination of education amd experience (still not making the cut).
Would be easier to just do your IR is Aus. Save the headache then come when you have the hours. Not sure what you mean by the CFI rating is better in the US.....