Yes. Instead, it would be better if you divide your capital amd invest in 2-3 potential coins. This will reduce the risk of investment and also ensure more profit as every coin has different growth rate.
Some alts which you can prefer are Litecoin, Ethereum, Monero. All three of these coins are highly popular and have one of the best development teams behind them. Also, they have huge market capital and are widely accepted in the financial market. They are good coins and you can expect good profit gains from them.