Please don't be stupid to look for another strong coins mate because
 Bitcoin is already the strongest coin in this market
 and nothing can beat this.i think if you really wanted to have altcoin
 in your holding then better diversify and use the
 40% of that 1 bitcoin to buy altcoins like BNB and ETHREUM.so these
2 will be added in your holding and wait for the
end of this year to take your price but make sure you are ready for an extension in case the market don't give you good
 movement this whole year.