Aero engineering in someways is quite limiting and isn't really much use for being a pilot. Its a whole heap of work for little benefit. The theory you need for being a pilot is extemely low level and about the level of your O grade physics.
Unless you really really want to do that otherwise a general mech/electrical/civil/chemical degree will set you up for earning the money to become a pilot later.
Actually the degrees which seem to give you a head start as a pilot are
Pharmacy and The degree you need to be a optician. Both these jobs allow you to locum while working as a pilot and also allow relatively high rates of pay quickly after qualifying.
BTW I have a Mech Eng and it to helped a wee bit with the technical subjects mainly because it was the third time in some cases I had done hydralics and 3 phase, DC electrics etc but many people who have not touched those subjects before have no problems with them.