You mentioned the Cromford report and city-data.com which are good information for current or past data, but if you're trying to forecast into the future, you need to get involved with the data of where things are going to be developing in the future.

@Tim Ryan I own and manage 75 units with a partner, no property management firm involved.

There's a few exceptions but they typically involve a job move etc but you won't qualify based on intent. 

Here is a list of lenders offering such financing:https://www.biggerpockets.com/blogs/2810/50272-list-of-non-recourse-lenders-for-self-directged-ira-and-401kYour IRA can not sell property to you nor can you be involved in any other transaction with your IRA.

@Kevin Zhang It depends on your goals and how involved you want to be. 

Currently I am an active real estate investor and developer (single family and large scale senior housing) but I am looking to get involved in mobile home parks. 

There is no extra hassle involved besides the time difference, as i said before.

Of course I do not know exactly how the others would be involved but I am assuming that they will both be highly involved with the remodeling/rehab project. 

In short, I had plenty of work cut out for me if I bought this property.I negotiated with all of them a purchase agreement, which would involve my hiring a probate lawyer to help unravel the probate that occurred and try to get them the legal authority to sell me the house.

This involves investing using solid criteria and fundamentals, not speculating or relying on appreciation or rent growth, and of course solid cash flow.