For me they are a bit the same thing. I would keep both considering gold price is manipulated by governements and central banks, but I would keep more bitcoins since it has a better growth potential. If you want to reunite both of them, just buy a physical gold coin 
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i will prefer bitcoin instead of gold every time because we have seen the evolution of both over the years and the way bitcoin increase its price from the day it's started not me only anyone prefer bitcoin instead of gold and i think bitcoin has a lot more potential than gold. it will rise upto 10000$ in mean years. so, the good decision is just invest in bitcoin and just wait for the good time to get reward. !