Yes its risky even if the bitcoin has a lot of potential. Invest only what you can afford to loose, because if you invest all of your money you will get to emotional when the price drops.
Nope., I don't think so, if you really an open minded then their is no worry or doubts to invest all your money in bitcoin. Because even bitcoin suddenly drop but when it will go high it's much more increase irs value that's we called bitcoin is volatile.
You should not the price of Bitcoin usually raises up make you forget the worst situation for its price in someday. It can ups so it also can downs and the time to ups or downs of Bitcoin is unknown, depends on the scenario of mover in the market.