@Jonathan Buehler  I'll take that money at those terms, interest rates are probably going higher, and depending on how long you have owned and how much the property has appreciated, the 20% equity left in the property could be less than you would have to pay in income taxes, possibly 23% LTCG, real estate commissions 6-7%, and in some places transfer tax. 

We got started through turning our personals into a rental when we were transferred (Military).

Maybe borrow the remaining down payment with a personal loan, car title loan (a real one, at a bank for 5-9% interest), CC balance transfer check at 0% for 18 months (assuming you have a plan to pay it back), etc.If you wanted to make the house your personal residence, you could put down 5% and pay PMI for a year.  

By the way, many thanks for the transfer tax calculator!

Can i transfer my duplex/triplex at a latter point into the llc?

Guess what... it's only digits transferred from one account to another..  

The only thing we have to do is transfer money to someone and 2 months later we will get it back, plus 15% interest, and if she doesn't pay, we get to put a lien on a house worth $75k.

If you have a buyer that wants to close before the 90 days are up you can just transfer the beneficial interest of the land trust over to the new buyer.

The deceased is not around to sign a deed, so there is no way to effectuate a transfer without a probate court getting involved.

You might want to take a look as transferring your money into a self directed IRA.