The crypto market is still very difficult to predict. To buy a TNB coin I think not to dare. It is better to buy top coins like BNB, XRP, and BCH. Buying top coins will be easier to generate profits. In addition to long-term investments and of course requires a coin that has good potential and excellent trading volumes.
Have you read what OP's wrote? he spreads his capital to two coin i.e TNB, ETH and also BTC. And I think this is the best way to put his money on TNB just 20% instead on BTC and ETH. I'll give suggestion to newcomers to buy bitcoin first before he buys altcoin because bitcoin is a hope for the user of cryptocurrency IMO. If he has an investment in bitcoin then he will have a lot of hope instead he has an investment in altcoin because the media will make him a little aware that bitcoin will be a coin which will be often be reported compared to altcoin.