A no brainer Fiskardo. Modular every time be it part-time for flexibility and financial safety due change in world events or full-time (known it done in 15 months). You could mix & match say PPL at weekends (after class 1 medical first), then hour building as required. The ATPLs are the most tricky & demotivating part and you might want to consider doing them full-time 6-8 months (that's what I did over 30 years ago). Some of the flying CPL & IR will require almost full-time attendance for consistency.
Remember the MPL is airline specific assuming you can actually get a place on one of the schemes, great if it works but could be left with nothing if it doesn't. You also can't go and fly a light aircraft for fun without further training. With a Frozen ATPL (CPL/IR) preferably both UK & EASA rated you can then apply to any operator and YOU not the 'sponsoring' airline are more in control of your dreams.
Strongly recommend you follow rudesuff's & others of a certain vintage advice as we are not trying to sell you something.