Ill have ATPL training from zero - PPL, IR, ME, MCC, CPL, ATPL... What to start with?
No you won't.
You will get a PPL theory course to access your PPL licence, and you will get your ATPL theory course in order to access your CPL training and licence.
At the end of the process you will have a CPL licence. MCC is to fly multi crew, IR is to fly in IMC condition.
Ok I will tell you what I think, based on my present airline experience and my past instructor activities with the students I have trained on piston, multi, or turbine, and I will imagine your are not a cadet with a job already lined up.
You have to start with the begining: what is your strategy to land your first job? Or are you just going blind, spending the most you can and hoping for the best?
When/if you have your strategy to get your first job, go to the second step: how to finance your training. If you have to make a loan, will you be able to reimbourse it, even if you don't find a pilot job ever? If yes go to the next step, which consist in building your basics, your foundation to become a pilot.
Inspire you from past stories, read some books (ST EX?...), and pass a glider licence. It will teach all what you need as important skills to become a pilot, will build aviation culture and basic knowledge, will challenge your motivation and will act as a kind of selection, you will maybe make some contacts aswell.
Next step will be to adapt your path to the reality, like changing country, or getting an instructor rating instead of a MCC, or anything else that will make match your training, your abilities, your skills, your contacts to the actual job market in your country, or an other one, or the world depending on your initial and updated strategy.
An important aspect will be to enjoy it, from your glider licence to your first job, and after. It means you shouldn't be the slave of your dreams but the actor, it means you have to master anytime your financial situation in order to not become the slave of your flight school, your company or your project. Be independant, and transform your path or career into a tool to make your short life (short like any other human being) worth it, because this is what most passionate aviator expect uncounsiously or not.