If the legal balance is already at 60% LTV for example, would a seller expect a higher amount than the legal balance possibly?

Registered agent is in case you need to be served legal papers, they will accept them on your behalf unless you would want to be served at your home or work, and technically it must be a place where you are available between working hours. 

Is anyone aware of legal issues with this?

An LLC creates a legal separation between you and the property, so if something goes wrong—like a lawsuit or debts related to the property—your personal savings, home, and other assets are shielded.

https://www.biggerpockets.com/forums/51-tax-legal-issues-con...

Fill out both medical and legal power of attorneys.  

If you stay on the mortgage, you need to write out a legal agreement as to what happens when she sells (or if she finds another boyfriend/gets married). 

I was a PMP on a deal and i gave my partner 3 months' worth of the mortgage in advance to stabilize the property. We bought the property via SUB2 and he has never made a single payment to the mortgage company. I came ...

I carry a very small, very light 8 shot 22 caliber revolver everywhere that's legal.

Is there a legal way to ensure they dont trash the place?