If I consider it, I can't say it's a bad investment. But, man, why the hack are you going for just one coin to such a big amount? There are so many choices to create a portfolio. I don't get it.
Because he already research and believe with this coin will be higher in the future. This kind of investment would make him huge profit flr him or if he isn't lucky, this would be a bad investment (altought i doubt about this would happens)