I find 1031 exchanges incredibly tough to pull off effectively.  

Since the 1031 exchange failed, you’ll owe taxes on:Depreciation recapture (~$112K) taxed at 25%.Capital gain (~$80K) taxed at 15–20%, depending on your income.To offset the depreciation recapture, you’d need passive losses.

You can’t use “strangers on the internet” as your defense against the IRS invalidating your exchange. 

@Alex Frey, you're in great shape to do the 1031 exchange on that property. 

I’m looking to add value to an existing team—whether it’s underwriting deals, helping with investor communications, or supporting asset management—in exchange for hands-on experience and mentorship.

So you're right for wanting to do a 1031 exchange.

I just sold this property in a 1031 exchange for a 3-bed/2-bath duplex on each side that I'm going to use as an MTR. 

Either way you go, you can always consider utilizing a 1031 exchange, as they are investment properties.

That depends on the exchange.

It is most frequently referred to as a Leasehold Improvement 1031 Exchange.