For Solana I just bought it pretty low during the last bear market and staked it. I would not play around with leverage, it is a really dangerous tool when you have no power over the market. If you use it too conservatively, the profits are too low even if you hit it right. If you use it more liberally, then you can wipe out months or years worth of work with 1 bad position even if the coin is doing great overall.
Solana has gone down again and is likely heading to $120 again given the market sentiment on the economy etc..
I would not say that it is impossible, but such a deep crash would hurt altcoins a lot. We still have not seen any significant signs of an altcoin rally, and a deep crash in Q3 could crush altcoins. I also think your target of $200 is low. Assuming there is a bull market for altcoins at the end of the year, Solana must reach at least $400 to stay relevant and even that is conservative.