Ok, so long story short, I made 50,000 dollars via sport betting on Cloudbet, a website that uses BTC to bet. Now, I have about 8.9 BTC and would like to transfer it to somewhere safe, I plan it to use to help pay my college tuition. Should I put in a private BTC blockchain wallet, should I put half in wallet and half in a bank account, I can only legally have 5000 USD in my foreign account, without them asking for taxes. How shall I approach this, I sure as hell can't leave it in the site, and have to withdraw it.