SPY Specific Outlook Position Help

To those much smarter than me – if I had a view that SPY would top in Q4 2024 and then fall by ~20-30% through Q3 2025, and wanted to make 100x from this, what type of option position would you put on? Please don’t tell me the likelihood (obviously nobody knows), 1.) but is it possible and 2.) what’s the most efficient method. This is assuming a 6-fig outlay willing to risk.