advantages

can go local Uni
save $$$
recognised else where
provide you with a solid foundation for your degree
sch teac..being spoon fed for the very last time

disadvantages

practically none other than it is quite time consuming

but diploma normally had a hard time if you want to top up to a degree.. end up waste more time in the end..

well.. in my sch, teachers normally close one eyes on f6 'adults' haha.. of course there is a limit to it