You're mixing use-cases and because of that, your end goals are a moving target. Here's the thing, if your intentions are nefarious, don't use bitcoin, or better yet, don't be a criminal if you were not one to begin with. You'll get caught as you're not an expert in being one.
If you're a normal citizen that wants to store wealth in bitcoin, then buy bitcoins from a regulated exchange. If you wish to be more active and don't trust the exchange, withdraw to a local wallet and make sure you know how to handle backups, and disaster recovery planning, i.e. if you die or if your house goes on fire, make sure the backups are also stored offsite and you have instructions for your heirs to recover your wealth stored in bitcoins.
With the latter scenario, you've solved all your concerns about being able to travel anywhere and also to transfer wealth almost instantly to anyone or anywhere in the world. It's that superior to gold. And with certain options now, you can use bitcoin to earn yields/interest but that involves trusting a centralized party, so only do that for a small portion of your holding. It's a true digital investment asset.
And one other thing on gold, you don't have to worry about buying a fake gold bar with bitcoin or you would not have to travel with it in your *** and get caught anyway. Saw that in the news recently.