1) yes the hours can count towards your ppl. just make sure they are all logged in the correct way.
2) if you have the funds and the time, there is nothing stopping you going for your CPL
3)you have 18 months from the first exam to finish all 14 exams for your ATPL groundschool
4) you have 3 years from the last ATPL groundschool exam to finish your CPL/ME/IR
5) if you have a one year old and go into training full swing, are you going to be able to give flying enough time at the same time as your child, and fund both along with living costs?
it may be easier to finish your ppl and do some flying for a couple of years, then when your child is old enough for school you may be in a better possition to dedicate your time to studying.