That would include items being expensed under the De Minimis Safe Harbor. 

that we’ve learned in our 24 years, managing almost 700 doors across the Metro Detroit area, including almost 100 S8 leases.

Question on section 121 exclusion for cap gains, specifically the timing of needing to live in the property for 2 of the last 5 years.

Could you self manage?

If you are able to self promote on social media, that might be your best bet.

I've also filed my personal 2023 tax returns and have those available with the STR income included.

I've seen conflicting information on when/whether these costs are deductible — most, including Pub. 536, seem to apply to the *purchase* of a rental property, and resources that deal with sales have focused heavily on either straight-up sales with capital gains taxes or on 1031 exchanges with deferred gains.

For every project, create a thorough budget that includes the costs of purchases, renovations, carrying, and sales.

By the time you foreclosed and then pay $30-$40k in closing costs when including a realtor to resell. 

FF is just one source and good for establishing a baseline of sorts, but I agree with you that it's going to be beneficial to market on other sites, including the OTAs.