Living trust, will, power of attorney?

[Steve Burke]

I have two rental properties, one in Minnesota and one Alabama. I am currently living in Arkansas and about to close on a house which will be my primary residence.  I want to make arrangements so my sister can take care of the management or sales of these properties and then transfer them to my daughter when she is a legal adult. 

What is the easiest way to protect my assets and avoid a probate legal headache for my sister. Will? Living trust? POA?

Thanks for any advice