We both have self employment income only and, as an example, had 9 different income streams last year. 

Which is why I want to wisely and safely acquire new passive income streams as soon as possible. 

I'm guessing a turnkey company would not want to hold a ton of rentals deploying all their capital when they can get other peoples' money to scale their business and create multiple income streams such as PM (no matter how small it is) and fees. 

Of course this is assuming the entire amortization schedule is paid as agreed.For performing assets yield is a great metric because you are taking the entire cash-flow stream into account.In instances where you are creating value then selling or otherwise liquidating the asset, ROI may be more beneficial. 

I thought at some point it would be good to refinance into a 15 year mortgage but that was a waste of money as I wanted the larger stream of cash flow.

My main goal is to build high quality, predictable passive income streams for the long term.  

and all kinds of kitchen waste crap was spilling into the common wall.Several times the toilet won't flush, and it's in the main drain, I went to investigate and have it snaked from the common roof stack to clear the blockage.Roach infestation issues (most likely caused by the broken DW drain hose spilling food waste into the wall) happened along that common wall, I went over and did pest control.I can go on and on and on.Whenever there is an issue, it's always up to me to handle, because he would ignore the issue, or simply tell his tenant he is "out of town at the moment." 

I have a couple VRBOs and a hunting cabin in Northern Minnesota and am wondering if this would be a good passive income stream for an extremely long term (generations) buy and hold investment.You can buy red pine stands (10-40 years old) for $1200-$1500 per acre.

Someone mentioned 8k to 12k closing costs.The cost to buy a triple net property ARE WAY MORE than that.30 year amortizations are generally reserved for MTNL (retails strip centers) with multiple tenants for the income stream as they are underwritten by lenders differently than STNL.I have seen a few times when lenders would do a 30 year amortization for STNL schedule but LTV was really low like 30 or 40% so putting 60 to 70% down.

I want to use real estate investing to diversify my savings and develop passive income streams, and hope to have fun and learn as much as I can in the process!