In the 6 years I have been here with Bitcoin, I have not had any problems using it; until now, I am still using it, and so far, I have not faced any issues with it.
So what you said is okay, and it will provide additional knowledge about hiding Bitcoin in wallets that can store Bitcoin. As long as possible, the cold wallet is better, and of course, if you are capable of buying a hardware wallet, that is also better.