The other sisters have no interest in the property at all. 2) Is there any other options I have for acquiring this property? 

I like to look at everyone as if we are all one big family, so brothers and sisters I want you to know I love you all and I hope I will learn a lot from you.

My sister and brother in law bought the property for their family to live in for below market value Great deal.

That does sound like potentially a familiar status issue.Put it this way, if the four adults are all brothers and sisters you wouldn't have a problem with this 4+5 arrangement? 

The Goal: My sister and I have a property tied up with the (possibly harebrained) plan to clean, paint, carpet, create an unpermitted “flag lot” with fencing, and fix a plumbing issue (10k), place tenants ($1,350/month.)

It could be a spouse, mother, father, brother, sister, etc that is recommending they don't use you as an agent because you are a friend.

If so, how did you structure things and could you share your experience.I heard the guest on this weeks podcast #348 talk about how she did this with her sister and it really had me thinking.

We market my sister-in-law’s artwork in some our AirBNBs.

Even if we take a bath on the investment funds used and have to pay the income tax on it, this deed will likely be an issue when my sister and I have to sell the property in many years when my parents have passed away.

The home has about 100k available to borrow...parents live in the home...trust is in the parents, mine and my sisters name.