I have bought some Bitcoin in a price $300 dollars each. I am glad I bought 400 btc. Bitcoin will play gold. Shall I buy more Bitcoin or Gold?
If you already have 400 bitcoins, in my opinion, you can no longer be interested in profit. This money is already enough for a lifetime. The only question is to preserve your capital. Therefore, it is advisable to convert a certain part of bitcoins at their high price into gold or another stable currency. You cannot keep all eggs in one basket.
With that 400 bitcoin, he doesn't need to think about investment in altcoin because having 400 bitcoin will be more than enough for him to be the next richer person in his town.
He can only wait until bitcoin price reaches more than $40k and sell it to make a big profit, even if he just sell for less than 10 bitcoin because that will be huge money for him.
After he sells his bitcoin, he can buy gold as the other investment in his real life, and hold his bitcoin and gold together for a long term investment.
By having bitcoin and gold, I am sure that he does not need to worry about his life because he will live with a lot of money from now on and in the future.