Good luck on starting with your ATPL's.
However bear in mind the time limit from your first pass to your IR. How realistic/sure are you of obtaining the finance? If you are close to getting it (currently working, minimal overheads etc.) then no problem. But if you expect a long gap between finishing the exams and starting training, watch out for the 36month rule. (Must pass IR within 36 months of 1st pass at ATPL writtens.)
There are plenty of posts on here when calculating the expected costs. But always factor in an extra amount for contingency. (delays, extra training etc)