bitcoin is relatively safe, in the long term, don't look at the short term, plenty of manipulation going one, bitcoin need still plenty of time to grow
when everything about its problems will be settled, i beliave you will see the real usage of it, big merchants are waiting that after all, no reason for them to not accept bitcoin
I wouldn't say bitcoin is safe in the long term. Imagine someone bought bitcoins at 1000$ and after a few years they find out the price is at 300$, do you consider that safe? Of course not because it's not.
Well unfortunately, this someone has bought on the top of the bubble and that's what happens to the bubbles, they do burst.
Bitcoin is relatively safe and it ain't going nowhere but up in my opinion! Of course, caution is obligatory.
As for the OP's problem, $600 is a lot of money to invest and if you need it to be anonymous as well, you will have to work hard to get it done. There exist the people that get these kinds of amounts for other people. You have to find them!
Bitcoin safe it all depends about how you use it because it can be safe if you own your own bitcoins you know the wallets are not very trustabe off course but i think allot of people has recognized that.