There is no doubt that BTC and ETH are the best two options that are available at the moment. Bitcoin price is currently trading at $21.6k so if I were OP I would buy myself one bitcoin and the other 8k I would invest in ETH because in my view the merge will help ETH up and I will have some small profit from it. And with bitcoin, this will be my long term investment, I can hold it till next bull cycle if bitcoin hits the $100k target, I will take profit.