The fact that the seller is offering owner financing for their own tax purposes doesn't affect your ability to claim these benefits.

This seems unrealistic to me.

They claim to have 9,000 doors under management in eleven states.

Just a heads-up—bonus depreciation can be claimed up to 60% for 2024, and it will drop down to 40% in 2025, so that’s something to keep in mind as you evaluate your options.I’m not endorsing any particular company, and I don’t receive referral fees for recommending the one I used.

It's always the new ones that shop you to death and are asking for unrealistic terms. 

Most also rely on beefed up rents and unrealistic operating expenses in their pro-formas to justify higher sale figures and can generally take advantage of their investor clients who are not familiar with the nuances of the market.Again, my recommendation is to be more active with your earliest investments but if you feel so strongly about a particular market network and partner with the leading developers  in that  market.

However, people want to sell books about it and gurus claim it still works in today’s environment.

Meanwhile, they form LLC's in preparation for when claims or conflict will arise almost as if there is an acceptance this will occur. 

Ask for the woman's tax return to see if she claims child support/alimony etc because technically that is also part of income.

Have you verified with your builders risk carrier that you will have coverage if there’s a claim and the renovation is completed without proper permits?