I stand by my previous comment, start your PPL now. You have plenty of time for the ATPL exams and then for the CPL and ME-IR modules. In the meanwhile you can fly on your PPL, log hours flying in Europe or in the US with family and friends while keeping your job.
It sure takes some dedication and organization to make everything fit in your work schedule, but I do believe that you can start your PPL this week as well. And enjoy it.