I see that you obtained your CPL/IR through CTC aged 29 in 2013. You seem to imply no flying since then from your previous posts?
So the first step is to obtain your class one medical again. If it has expired by more than 5 (?) years then an initial class one is needed again??
With regards to the flying side, there is a seven year limit, without flying, impacting upon your IR. Renewal or full course again. So licence issue 2013, IR expiry 2014 plus 7. Need to be with a valid licence by 2020/21.
So speak to an ATO about your CPL/IR validity requirements; then once you are current again, think about the MCC be it MCC/JOC or APS.
Once the MCC is complete, the acid test will be a sim ride with your perspective employer.
The bottom line is that if you are really passionate, have the determination and can focus you will succeed; simply do it.