I agree with your choice, especially Bitcoin and Ethereum Classic. In addition, my other coins for retiring in coming future :
1. Ethereum, because many projects use the ethereum platform based on ERC-20, and this indicates that ethereum is the most favored coin by investors.
2. EOS, because the price has increased many times over a period of one year, from $ 1 to $ 6 with the highest price being $ 21.46. I think this coin will increase again in the future.
The other candidate's coin in my choices is Bitcoin Cash, Expocoin, and Stellar. I don't know what the exact reason why i chose that coin, but the coin made me very interested in holding it for a long time.