The seller will obviously hold the debt/note for the existing mortgage while the title gets transferred to me.

"writing off these losses against my W-2 income which is telling me I am entitled to a refund" Are you properly qualifying as real estate professional?

Take ownership of your mistake and learn to do the proper due diligence recommended above😊

Make sure that you posted the property onto a digital website like Zillow, and always ensure that the tenant fills out the proper paperwork, so that you can review their background.  

Is it worth waiting until September and hope the market is still as strong or take the hit on capital gain taxes and sell now.Secondly, if we do hold this property would it make more sense to prioritize debt paydown (instead of investing in another property, put our cash towards our mortgage payment and have it paid off within 10 years.

This makes it easier for landlords to find tenants and generate steady rental income.Favorable Landlord Laws: Florida has landlord-friendly laws, which can provide landlords with more control over their properties and make it easier to manage rental units.Tax Benefits: Real estate investments in Florida can offer various tax benefits, including deductions for mortgage interest, property taxes, and depreciation.Appreciation Potential: While past performance is not indicative of future results, many areas in Florida have historically seen strong appreciation in property values.

Do I understand correctly that I can roll over the IRA and non-IRA stocks into a Solo 401k, not the Roth IRA, then use the $ value of these investments to fund R.E. investments, such as down payment for a mortgage, or purchase outright?

Unfortunately not, Gabriel. 1031s are quite strict, and involve equal “equity” deployed in order to persevere the gain deferral.That said, if you’re okay with realizing *some* capital gain on boot / mortgage boot, you can pull *some* cash from the 1031 exchange.

If you have a quiet title order AND properly served everybody you could find AND the guardian ad litem did their job properly, then you are probably safe.

Screen your tenants properly at all times.