Depending on how intense and unforeseen issues, that can bite out a huge chunk of 50k alone.

Try installing sodium (high intensity) lighting, install loudspeaker and play classical music (I know it sounds crazy, but it drives the younger ones away), or one of my favorites, a motion detector that turns on the sprinkler system.  

I'm definitely ready for the football and basketball to start up again.I think your path of flipping leading into long-term rentals is exactly where my partner and I are headed.

Tony the 50% mark is simply a quick screening tool.When you have a candidate you perform a much more intense due diligence looking at tons of different factors.Example if you buy at a current 10 CAP going in but you didn't estimate a proper increase in utilities,underestimated improvements needed and deferred maintenance,and didn't count on renewal lease rental rates dropping or counted on rising to equal a certain return.In that instance what looked like a 10% cap going in is now a 7 to 8% for a B to C product for the next few years.If you have a 2 to 3 year exit planned you have really hurt yourself.As a big apartment investor put it bluntly to me one time."

As you can imagine, for a house to flood and get 2-3 feet of water in it, the rainfall likely far exceeded the 100 Year rainfall intensity.

We decided to move away from this deal for a couple reasons, one of them being intensive management/learning curve (and lack-luster corresponding returns) due to heavy POH, something that I was reluctant to dive into on deal one in the MHP sector. 

It will cost more than a pitched roof as a flat roof is more labor intensive.

Is there any workaround may be more labor-intensive where I could find these phone numbers and addresses linked to the properties for free

Looks like I'll be playing devil's advocate here as compared to most of the responses...There are a couple undeniable points people are making-- you can get a ton of info on BP, the Rich Dad courses have intensive amounts of sales pitches intertwined in them, and it is very dangerous to jump into one of those expensive courses. 

Do not waste your valuable time on MLS as it's full of intense competition.