I never put all my assets in a single investment vehicle. This is a very risky situation for investment. Instead, I used different investment tools to minimize potential losses.
It makes more sense to buy gold with 50% of the money and take the bitcoin with the remaining 50%.
You should also consider diversifying your money into other asset classes as well because investments means not only just bitcoins and gold. But you can also invest in shares, bonds, some money in fixed deposits if your country is offering decent % of interest and real estate businesses. The more you diversify then the investor can reduce their losses in the longer run.