So, keep that in mind as well. 

I think most of the ones I have come across are either a) Very well off, and diversifying, or b) much later in their careers and they are using a vehicle they know (RE), just in a more passive way. 

That will give you a good baseline to start from.You can also use AirDNA by buying the specific area to drill down farther.Try https://www.awning.com/airbnb-estimator as well.

Well, dad decided he wasn't ready for the ensuing responsibilities of being a husband and father and skipped out, leaving mother and daughter in the lurch.

@Gilberto Rodriguez Well...I have a group that does NOT charge and there are no things to buy, just free knowledge.

When we look for arbitrage units for our clients to sublease, we are upfront and honest, as well as explain the risks to both parties of this model. 

Hold, continue building equity, and in the long run you will do well.

If you have the hustle, you can get better cash flow using alternate rent models, but they require more effort to do well than managing rent ready LTRs. 

I used to have something like this, but it pretty comprehensive.I have the original unmodified version I started with that I can send to you if you'd like it.I believe its geared towards units where I've modified my version specifically for commercial industrial/office/mixed use developments.If you want it send me a PM with your email.

I do know of one guy that does this and does very well.