@jmban33 I think you misinterpreted the word "Overseas Professional Experience". It just means any professional working experience outside of Australia. So it means meron ka ng 5 years Overseas Professional Experience which is equivalent to 5 points.
So you do have a slim chance of getting an outright PR depending on your age and if you have a bachelors degree or not. Assuming you are within 25 to 32 years old and have a bachelors degree then your points total will be as below:
Age = 30
Work Experience = 5
English = 10 (you can actually get 20 here is you get Superior English Result, Difficult but doable based on my own experience)
Education = 15
So this is 60 points already, sadly that may not be enough for you to be selected in the EOI pool due to an overwhelming number of applicants.
There are other options though. You can try to get 20 points in English as I did, or try to secure a State Nomination. State Nomination will not only give you an extra 5 points, but it will automatically get you the coveted ITA (Invitation to Apply for Visa) but based on my experience it is not that easy to get. But I did apply with Victoria and NSW only though, so I can't say how hard or easy it is to get nominations for other states.