This is something that you should decide. Its your money, its your investment and its you who knows what is best for you. Random people will tell you to invest just because you have the money. But they don't actually know what your financial conditions are or doesn't even care if you make a loss. You think you can afford to lose all the money you are going to invest in bitcoin? If yes, then why wait? Go ahead and hold it for long term. Even if other countries doesn't follow what El Salvador is doing or even if the country fails, I doubt you will make any loss. In the short run, there might be some hiccups, but in the long run, you will be making profit.