3) It's an older product at 1940.

One of my preferred lenders has a great DSCR product.   

We used to get mailers from them, but I did not see any 30 year fixed products that I recall.

So, as long as I believe I am putting the money towards a productive use that will yield a good return, then I'm all for it. 

However if you read on, he goes on to say, "In addition, the market rates on other interest rate products are likely to rise in a high inflationary environment even if the Fed were to keep overnight rates low.

(I am not an attorney, but I do expert witness work FOR attorneys on a variety of mold-related issues.)Often times, I tell folks to take photos of how bad it was in the beginning, how it looked when it was all cleaned up, and then how the finished product (rebuilt area) looks today.  

For example, you can leverage up to 10 homes using Fannie/Freddie financing which is still one of the best loan products on the market.

TSP walls, prime with killz (they actually have a water based product now called Restorer that I’ll be trying soon, so much nicer than oil based and my friend who owns a restoration co suggested it), paint.

What's the best type of loan product for this, to have a low monthly payback?

With the options folks have nowadays, it is the Syndicator's problem not the investor's on how the Syndicator will pay the bills in the time it takes to turn around a property and sell it.