Nobody can answer that question for you. It depends on many things including your risk profile. Are you a high-risk high-reward trader, or do you have limited capital? What is your profit target? Whatever your answer is, most of the time you will always need to manage your investment carefully. DCA is probably one of the ways you can accumulate SOL if you consider it a strong project, or just stick with BTC if you don't want to burn your money.
On the other hand, many Solana projects are launching their own token lately. People are speculating that more projects will continue to do so since it is basically easy money for them. Just print some tokens, airdrop them to early adopters, and then sell them in a specific timeframe. You might want to check and look around if airdrop hunting is your thing. It is basically a speculation that needs some capital too, unlike airdrop in the early days.