My grandpa is super concerned hes not going to be able to retire in time to be home with her.

But you will have to make an investment in time and money. 

My business partner is between jobs and I do not have a W2 income so It would have been tough to qualify for traditional financing in time to make this work but our LLC has a strong cashflow.

The cost will be more so in time.   

We have the cash coming from the 401k but are worried it might not make it in time.

At this point in time, it really doesn't matter what make/model/brand that you choose.

It's kinda gotta be whatever I can manage to drum up in time to keep her with a roof over her head.

A) it is an unreasonable stupid request at this point in time, B) as you said, you don't want to set a precedent with this new tenant by allowing them to set the rules, C) This is an indicator of who you are renting to.....any way to back out of the deal?

The third amendment states "No Soldier shall, in time of peace be quartered in any house, without the consent of the Owner, nor in time of war, but in a manner to be prescribed by law.The Third Amendment’s restrictions on the practice are often cited to demonstrate a constitutional right to privacy and to substantiate claims that the Constitution and its Bill of Rights were designed to protect civilians against overbearing military and governmental authorityBasically the law was created to prevent the government from seizing private property and forcing it citizens to house individuals against their will?

He intimately knows the market there.