Also, don’t forget some brokerage fees when you find another renter, so account for at least some vacancy and fees once every 18 months. 

Consider the additional costs for cleaning and maintenance with Airbnb.

Since condos need two types of insurance and many of the largest US companies pulled out, the cost tripled and with less coverage.

So yes, maintenance costs can be higher.Happy to answer any other questions you may have.

Most 150k duplexes sit on the market for months with no offer.

And that by itself could blow up your exchange.The cost for a QI like us to do your 1031 exchange is very small - especially considering al of the other issues you have going with this sale.The QI does have to be in place prior to the sale of the old property.  1.

I’ll be very upfront and honest- I have about $20,000 saved for a down-payment/closing costs.

I assume that I don't actually have to pay the capital gains until the principal repayment exceeds my cost basis, which on an amortized loan would be quite awhile (assuming they don't refinance and pay me off altogether).

I have 1 unit that I have been self-managing for several months now and so far so good!

So, what you are asking is there lenders that will do 0 months seasoning?