Price of NEO is very down now , so it is the best time to buy NEO for 1-2 years and i believe it will be above $300 in that period , so x10 gain for you . however if you are investing all the money only in NEO then better to diversify it to keep the balance in your portfolio .
I agree with you that it's a perfect time to buy NEO for long term, but I'm not sure about the 300$ price in 1-2 year. As we can see new perspective projects are releasing and it will be not easy for NEO to grow in price 8-10 times.
It seems to me that it is very risky to buy some coins for a long-term outlook for 2-3 years. In any case, everyone understands that the current state of things on the crypto-currency market does not bode well in the near future.