Agree with you that cryptocurrency trading will be more risky and losses will occur faster if we miscalculate. But like I said, as long as OP can take risks and is willing to accept the worst case scenario then he can trust his friend. In terms of risks, I believe his friend also mentioned it to the OP and left it up to him to decide.

My point is that it will all depend on how much OP trusts his friend and how much risk OP is willing to take. Because for someone who has no intention of becoming a trader to make money on their own, there seems to be no better solution. But I guess OP doesn't trust his friend as much as I think, because if he really trusted his friend, he wouldn't come up here to ask for our advice  .