Hedera Hashgraph is very interesting indeed. As I understand it, it's an improved version of a DAG (Directed Acyclic Graph) with its gossip protocol. The problem is that it's the brainchild of Leemon Baird, with a normal, legal organisation behind it that you can forbid, shut down, throw in jail, or worse. It's not unstoppable like bitcoin due to its decentralisation.

But it first needs to become big in order to be a threat. I also think it's going to be one of the winners, although I wasn't smart enough to get in in January.

If so, a 1000% profit may be too modest. Why don't you take a partial profit in dollar terms, so you can't make a loss and then hope for the best.