Blackbear1,
The document you need to look at is called LASORS. I have seen it online before in PDF format, but it is also available as a book. If you find it online, search it for QSP (qualified service pilot) and you'll find the relevant bits.
You should be very competitive at 31 in any case, but with the military flying background and command hours, even more so.
You will need to get a PPL(A) first if you don't have one, then complete ATPL ground school. Next obtain a CPL(A) and a Multi-engine piston class rating. For the CPL(A), it will be training as needed to pass the skills test. You can probably save some quid by doing a combination MECR and CPL course and combining the check rides into one. Next complete an IR. If you have a military IR, you should check LASORS to see if you can do the 15 hour conversion course instead of the 55 hour ab-initio IR course. Finally, you need to do an MCC course to get an MCC certificate.