My take on zero-to-hero on a Budget, but wanting to do it well.
- Pick a good school in the UK that does PPL, CPL, ME, IR
- Take a few weeks in the summer, do the PPL intensively
- Do the ATPL writtens with a distance learning school. CATS has a good record and is probably cheapest.
- Get a 61.75, go to the USA (or Canada and their equivalent paperwork), hourbuild there in something small and cheap, preferably a different type to the one you did the PPL in. Do it properly - travel some distance. Learn stuff! Work hard on the precision and procedural nature of your flying whilst there. Don't rely on GPS.
- Come back, take a lump of time, preferably in the summer, and do CPL, ME, IR with the school you did the PPL with.
- Find a mate, share an MCC course with them - hopefully you have mates from the previous courses by now!
You can price that up with loads of sources online and work out the prices.
At 10% to your budget to play safe, don't pay up front for anything except the groundschool. Don't forget to budget for accomodation, and flights to where you do the hourbuilding.