Basically any money I could make for my broker, I got to keep a percentage of it (ie more interest, more money). 

I don't think you are looking for something else to keep you away from your family for an addition 40+ hours a week, I think you need to figure out what type of investing you are interested in that can help you create the life you want.My advise is to do research into what that is, and then learn the basics of that particular niche. 

Basically with knowing there could be some potentially large items to fix in the near future, knowing that you could utilize the money better elsewhere, and seeing where our price levels are right now, my suggestion would be to 1031 this property into a better cash flowing property with more stable long term values.

High end ones are designed for full timers, but my basic unit (a 22' North Trail) specifically notes in the manual its not intended for continuous occupancy and that moisture will be an issue if use it heavy.

And anyone can use the TREC 20-14 (basic purchase agreement).

I would say don't buy just because you don't even give the most basic info to base a decision on. 

If you do BRRRR right you can turn your parents house to a massive rental portfolio but not overnight!

I have done plenty well following some basic real estate investing guidelinesIt's too long to repost how I do that so I'll put it here: It's about the 6th post downhttps://www.biggerpockets.com/forums/311-buying-se...I take the Balou approach from the original Disney movie "Jungle book" "if you act like that bee acts, uuh, uuh, you're working too hard".Set up your Systems & Procedures, Analyze your market, put together a marketing plan, work your market, close the business and Repeat

For absentee owners, cash buyers, & high equity you can pull from Listsource.com or Realquest (basically the same company one is pay as you go the other is subscription based). 

Unfortunately, there is really no best and quickest; it's all going to take time, a lot of reading and some understanding of basic repair.