I agree with @Isadore Nelson, there will be an initial sting due to to the IRA transaction but with quick math at 8% your 60k will generate about 4.8k in year one, in 4 months at 1.3k you've already eclipsed that, their will also be a larger tax for passive income and an initial penalty from the IRS, but it won't erode the 8 month difference let alone the yearly compounding effect.

What the IRS is concerned with is when you are doing a 1031 and want to purchase a property from a related party. 

The IRS could apply this doctrine if it appears that the series of transactions are structured primarily to achieve a specific tax outcome, such as avoiding taxes.Regarding the 1031 exchange, while in-laws are not considered related parties, the transaction could still be scrutinized due to the complexity and nature of the other transactions involved.

With a 2.25% IR, total monthly expenses are at about $2,000 currently.

Too risky for us.Regarding additional guest packages, you can easily change your tax situation by offering what the IRS calls "significant services".

Work with a CPA familiar with SDIRA tax implications to plan accordingly.Private Placement Memorandum (PPM) review – Ensure the syndication allows for IRA participation and that the deal structure aligns with IRS rules.Direct Purchases with Non-Recourse FinancingLender requirements – SDIRAs can only use non-recourse loans, meaning the property secures the debt, and your IRA isn’t personally liable.

If the building (original purchase) is fully depreciated the improvements and repairs you make to it in year 28 still need to be evaluated to determine if you need to depreciate it or not. 

There hasn't been a lot of recent case law to indicate how the IRS is leaning right now. 

Depending upon whether they are a bank or a trust company, custodians are heavily regulated by the IRS, DOL, possibly the FDIC, State Banking Commissioner, and maybe the Comptroller of the Currency.

A CPA ensures compliance with IRS rules, maximizes deductions, and avoids costly mistakes, especially for higher-income earners with multiple income streams.