When I start running a business with lots of additional cars coming in, I crowd out the residents, imposing a cost on them, even if all of my guests are lawfully and properly parking their cars. case in point- noise.

I believe in the state of SC I will also owe something like 5% or so at year end (in addition to feds?)

DSCR Rates are going to vary by quite a bit based on multiple factors (more than conventional), primarily FICO, LTV and DSCR - but also buydowns, prepayment penalties, and some alternative structures.That being said, I would say the average rate right now is around 7.5%, but can vary all the way down to 6% or higher than 9% for some special cases (like Multifamily 5+ or Mixed Use)Heres a couple articles on what goes into DSCR Rates (in addition to market) that hopefully helps!

The second guy only saw photos and quoted me for $2,500 but was actually unaware of the additional light switch move.

The seller knows the property he’s selling, and might not mind foreclosing and gaining ownership once again.  

The seller had some additional terms such as cleaning up the site with old debris that I was okay with accepting because the property needs ALOT of work anyway.

It is no different than a loan company requiring insurance on your house or car.As @Dawn Brenengen said, require that they put you down as additional insured.

Thank you for the replies.What type of additional services can one expect?

Additionally - this would be our very first investment property that happens to be out-of-state as well. 

Looking to gain more knowledge in real estate investing with hopes to own a couple of properties in the future.