Your decision to buy ETH coins when it reaches $ 80 by the end of 2018 is a very good decision. And with the purchases that you have for now, of course, you will make a lot of profits. Ethereum is now almost $ 200 but if you want to be patient and last a long time. I am sure if Ethereum will reach $ 400.
if this rising on price continues, i believe ethereum price will be more than $200 in the next couples of days
and for sure, this year ethereum price will hit about $500 even more