So their are a couple of things to consider in making that decision. There are a couple of gold mines sitting out there in cryptocurrency land right now. Coins right now at a very low bitcoin price that expect to see huge GAINS by the end of the year include ETHOS, UTRUST, NEO, Ontology, and don't forget about classic projects like Power Ledger and Substratum, and Basic attention Token is on the potential list for coinbase listing and even if it doesn't get listed it's build with a solid team around it and a very good project in devolving a web browser that eliminates unnecessary ad data and other related things thus improving speed and efficiency for the user.

So you would have to decide if you are more willing to long hold and keep things simple and put 99% of your holdings on one coin or if your willing to diversify and sell the peaks later on in the year and move your money around from one coin to the next when a certain coin spikes.

Also another consideration are coins that provide passive gains and this includes NEO, Ontology but also KuCoin which is an exchange coin (Kucoin.com). These coins can be great investments as they are expected to grow significantly and the steadily earn you rewards that will also grown in value with time.
They have a rewards program that pays out 50% of all fees charged on the exchange and distributes them to kucoin holders in the form of kucoins. They are a popular exchange that lists allot of new coins and often have huge giveaways for top traders of those new coins. Also they have a set plan to buy back 10% of the kucoins in circulation and destroy them every quarter, this will drive down the supply and increase the value per coin.