Taking more than a business day to respond maybe you can let slide every now and then I would say as you never know whats happening on their end.

The longer the pre-payment penalty the better the rate is, so a 5 yr PPP will on the surface look better then say a 1 yr PPP. 

I found a house hack that needed a little more work but I would say a safe budget for something that doesn't need too much in that price range would be about $35k

I see many investors buy a $20k note and get hung up over the yield which the delta between say a 10 or 12% return is a few hundred dollars - waiting an extra six months to buy a loan costs you more…3.

I was compelled to create an account to chime in and say a few words. 

If you are fully offsetting you're income though expenses and carrying over any losses, you are in a good spot I'd say. 

If you are happy healthy and netting lets say a 10% cash on cash return on cash flow. where are you going to invest your proceeds of the sale?

When you say as long as its not directly in flight path, meaning - when plane flies over the house?

For example, say a 200 foot road with a Cul De Sac costs $100,000. 

I will say as a final word, a lot of my perspective on this issue comes through a lens of how my wife manages money--which I suspect is close to the average American, but I am definitely less experienced than many people on this board.