Brightline Noise/Nuisance - residential

I'm looking at possibly buying a property but it's between the Brightline tracks and the ocean, so double whammy with a flood zone. How bad is it living close to the tracks? Is it loud? Can you enjoy hanging in the back yard? Sleep at night? Any crime-related issues being close to the tracks? Does it rumble your CBS homes within a block? The neighborhood seems nice, and it's a deadend street, but I plan to spend a lot of time outside and I don't want to be woken up at night while sleeping either. Thanks for thoughts/advice!