You should be able to pay off the loan anytime during that period, without any sort of penalty.

He's got all sorts of calculations and reasons.  

If you're tax bill is $6-8k (minus the 1031 fees), surely you can make that up by taking multiple swings over a longer period of time.OR pursue some sort of owner occupied strategy with that cash if you can swing a live in flip or house hack.

Verifying last 2 years of rental history and income extremely important to find the “best of the worst”.Make sure you understand the Class of properties you are looking at and the corresponding results to expect.The City of Detroit has 183 Neighborhoods we’ve analyzed.DM us if you’d like to discuss this logical approach in greater detail!

For a BRRRR if you are using debt most people will use some sort of hard money to purchase and a construction loan to fund rehab (unless you use cash).

.: Quote from @Mark Cruse: The worst thing you can have in this business is your tenants hating you.

For goodness sake, having to remove mechanicals in between tenants means you are buying the worst of the worst assets properties imaginable. 

now if you could get a seller to be the bank I get that you could smoke and mirror those deals.. but i would think those would be picked over low value or properties in the worst areas of town etc..   

Verifying last 2 years of rental history and income extremely important to find the “best of the worst”.Make sure you understand the Class of properties you are looking at and the corresponding results to expect.The City of Detroit has 183 Neighborhoods we’ve analyzed.PM us if you’d like to discuss this logical approach in greater detail!

No one will watch our money more carefully than us, and have usually had some sort of arrangement (or try to) similar to what you've proposed.