Hey Keeshy I worked a div 2 shift a while back at the Epworth and this male div 2 there was doing his div 1 via Open University Australia which seems like it's pretty much an online course. Anyway I don't know much about it and it might be more expensive if they don't have HECS but I just thought I'd mention it because it might be more flexible than the other div 1 conversion courses.
Anyway - I think your plan is good - work for a while as a div 2 and see how things pan out. If you decide to do your div 1 within a few years of starting work it may not be worth doing your med endorsement unless someone else pays for it!
p.s yeah placements are really hard to get - we've been pretty lucky in our course but I know some unis are making students do night shift and weekends to get in their placement hours :-( the system just can't handle so many students.