If aviation is your passion and your still a little bit undecided I would complete the exams, get your CPL and FI rating and instruct part time, this should give you a huge degree of satisfaction and enjoyment. Now you will need to remember that ATPL exams will lapse after X amount of months if you don't do your IR so its in your own interest to get the IR before the certificates become invalid for any future opportunity or decisions otherwise its the whole lot again.