By looking at the chart (https://coinmarketcap.com/currencies/kin/), you can tell that KIN still has more room to grow, it has not achieved its ATH yet and KIN already has the liquidity with over $10 million daily trading volume, so I believe this coin is good for long term HOLD, but of course a target of selling is necessary that's the most important part.
I don't want to give a specific price but I believe this is a good project in long term. Also, make sure you check the supply of this coin so you won't expect an unrealistic price. KIN circulating supply is 1,518,114,145,968 or 1.5 trillion. Max supply is 10 trillion.