It's a pretty uncertain economic outlook, there are redundancies in at least one or two big firms across most white collar jobs..
but yeah, i did read somewhere that only 40% of actuary graduates ended up becoming actuaries.
if you're not really interested in becoming a lawyer, but becoming some sort of a financial consultant, a good area where there is heaps of demand is in corporations law, particularly because of all the 'new' reporting issues which have come up since 2001. even now, more than 10 years later, my tutor said that there was still alot of work available in this area, and that this area was a significant growth area.
As for macq, i thought you could only transfer externally into law at the beginning of each new year, but i guess this has changed (or perhaps i was mistaken)
Either way, I'd suggest for you to pursue your interests. As for your family pressuring you into medicine (which i assume is the ultimate goal), perhaps you can tell them about how there are too many medicine students, and not enough vacancies for residencies once they graduate?
.. though the same could be said for the over-supply of law graduates.