I would go for both Gold and Bitcoins.
gold do have some value but the market for gold is not rising that much year by year. And it can get lost or stolen.
The price of Bitcoin on the market is kinda unpredictable but, you can get a big profit rather than gold in a few years. And the only way for someone to steel it is if they do have the access to your private key.
I would invest more on Bitcoin than gold.
For me, Some points are valid like bitcoin has and would yield more profit compared to the gold. Gold market is stable and that is why whenever stock market is in trouble investor move their asset in gold. Why gold and not anything else, because it has been the go to asset when their is doubt. Their are few instances where gold has been depreciated by considerable margin.
If gold can be stolen so is bitcoin if stored carelessly. One can store gold in vault for safety. Yeah i get it that a heist could undo the security of vault, however you could get insurance against it.
Bitcoin market is unpredictable and its a part and parcel of bitcoin life. It is its non-predictive nature that makes more lucrative compared to other commodities or investment tools.
In short bitcoin is greater risk greater the profit.