Now, SEO seems to be the craze amongst investors/wholesalers.

You need to be prepared to lose some clients.As for marketing, I think direct-mail marketing is a good tool.

It's a win-win as it is just one more non-cookie cutter tool I can offer to help people grow their portfolio without being hampered by expensive and too often punitive management contracts when not needed. 

Do you have a good resource(s) for me to research and pull these tools/tables from?

That metric can be used to compare this investment against other investments (real estate and anything else).There's a calculator on the BP website that should help with this, in the Tools menu!

BP has some great tools for doing this and I think they're free the first few times you use them.

Look up Awning Airbnb Airbnb Estimator it's a completely free estimate tool and gives you comps of nearby listings as well.

Happy to share any of our successes and failures, tools, tips, tricks, and resources.Do not hesitate to reach out, connect, and DM me if you want to chat more.Cheers

Another tool I use is to think about the things I already understand and can rely on.

I house hack as well and it is an incredible tool to start your real estate journey!