For any altcoin, you can calculate based on its market cap, set the liquidation price at SOL's or BNB's market cap, and short it. Taking profit at around 30% is perfectly fine. The only thing worth paying attention to is the funding rate. With $100,000, making $5,000 a month is no problem at all. The key is that retail traders on the Square currently don't have $100,000, so all they can do is gamble on one long position and hope to get rich overnight. So the rich get richer, and the poor get poorer.