Cost segregation study for STR purchase in November

[Guillermo Rivacoba]

High earning W2 income looking to offset taxes with a cost segregation study on a STR.

More than likely would be purchased early November, so would this make sense to pursue?
If i'm not mistaken, you need to show proof of 100 hours of work put into the property/rental, and make sure it is more than any worker or contractor that works there too. You can't rent out for longer than 7 day period to any one renter. If I follow those guidelines, would it still be feasible to purchase early November to offset 2023 taxes? Or is it too late in the year at this point. 

[Basit Siddiqi]

"You can't rent out for longer than 7 day period to any one renter."

It is the average of 7 days instead of limiting it to 7 days or less to all renters.