I'm glad I decided not to pull the trigger on one of them when I found out they were just business credit cards and not a true line of credit.

Ryan,If it is truly a separate company, you will want to have proper Insurance coverage:- General Liability (Bodily Injury or Property damage caused by your operations)- Professional Liability (aka Errors & Omissions - for damages caused by your decisions, advice,...)- Workers Compensation (even if you are not employing anyone)There are other coverage to consider depending on your operations.   

Sure enough some time later, he staged a trip and fall, photos taken with injuries.

It's part of what got us to pull the trigger on buying our first rental property and furnishing in a way that would work specifically for families that were in our situation.  

The depreciable basis would generally include the purchase price you paid for the property.The change in ownership might trigger certain tax consequences or impact the property's eligibility for certain tax breaks.

Would this move trigger a change in taxable amount?

I live nestled in a high tech area with friends who work in data security and its a common question/concern so it doesn't trigger undue alarm.Good argument for a bonded/insured PM in providing a layer of protection for both tenant and landlord

We also didn't know if a "due-on-sale" clause could be triggered. 

Don't pull the trigger until you have all the information that you need.

Will that trigger something?