You do know there are other ways to invest.. Not just bitcoin or gold, I'd suggest talking to a finical adviser about your investment options.
If you are content with low returns then it is probably best to save your money in a low interest account. It will be insured and is 'safe'.
Gold is a solid investment, the price is quite low at the moment, it seems like a safe long term investment, not very fungible though.
Bitcoin is dangerous, you could lose most of your money quickly, you could also make lots of money. It is fungible, if you can handle the stress of big price swings, it is a good investment in my opinion.
I wouldn't put all my eggs in one basket. I personally am long oil at the moment, I can ride out the overproduction dip, but it won't stay at $50-60 for long, I am willing to bet on that!
When youa re investing allot of money it is also nice to save some in a way to make it even better for later if you are only spending your money or invesrting you wont see something coming back later you know and that is not what you all want i think.