Both are the best of two different worlds, that is, Bitcoin is the best coin in the crypto space and holds a very important stance in the future, on the other hand, Gold is very valuable till date and those who invests in it, do not joke with it, but however, I do not think Bitcoin will play Gold because Gold has a lot of institutional backings as well as the government. However, considering what you want and how your long term plan is, I think it would be wise to invest in both Bitcoin and Gold; with the growth of Bitcoin till date has shown that it can be used as a store of value, Gold on the other hand, is already regarded as such.