I you want to go to Uni, finish year 12 and got to uni. Don't do an apprenticeship which takes 4 years.
I your smart enough to get into aeronautical engineering then I would advise you to go down that path. Not into a fairly dead end trade with little earning capacity and even less training available to get a licence. Sure, the training by major airlines might change in the future (or it may not) but either way you'll be earning well less than the average wage for the first 10 years of your career.
Go to uni if you can, you'll earn more money and be earning well above the average wage probably straight after you finish.