HOWEVER, most RV owners struggle to back up straight, let alone around a tight turn into a relatively narrow opening.

Dan before you worry about the condition of the properties you're going to want to narrow down the locations you are comfortable with 1st.

There will be less options when you narrow your search down in this manner but you may be able to find exactly what you're looking for.

That being said, if you narrow your search to a specific type of house in a particular area...you can get some general purchase price numbers.For example, I am looking in a specific area that has tons of 1960's houses and the home values are all right around 220-240. 75% of $240k is $180,000, so if I can buy a property and be at or under $180,000 after acquisition, holding, rehab, financing costs, etc then I can pull all of my money out. 

The SEC is a significant enforcement agency and you want to be on the right side of the law.Make sure you know the rules around contacting accredited and non-accredited investors, rule 506(B) and 506(C), and multiple other solicitation rules.

You just need to narrow down what type of neighborhood and tenant you are going for.

B and D obviously have higher equity pay-down, but smaller cash flow. 

Jeff if you have the money it would be best to pull the band aid off and reno everything at once and then get market rents.If you don't have the cash in hand I would raise rents a little and build up cash reserves.

I've learned a lot but of course there is always much to learn.I own 7 SFR rentals and am looking to scale, so I'm entertaining the idea of making the jump into some multifamily investing.My properties are in North and South Carolina, and in C+/B- and better areas.  

Lots of things to weigh out - Her present health condition and needs can really help narrow down what is best for her.