You'll have to keep me posted on your next move! 

If the house is listed on the MLS and everyone else has passed on it, then you didn't "find" it. 

Would a HELOC or home equity loan on my personal home be a good idea to fund this?  

Any article on the internet should be taken with a grain of salt and up to your discretion on how you want to take it and want you can gleam from it :)

The property owner's tax professional can help them with that and ensure they don't pay taxes twice on the same income.Disclaimer: My advice/opinion in this post is just that, my opinion.

Is there anyone who can guide me on it?  

Getting more mortgages does not help me with the two issues I outlined - spending less time on real estate and freeing up head-space.

Use search function.People have posted STR calculators on here.

Quote from @Charles Evans: You are actually behind the 8-ball on this.

There are plenty of mood boards and renovation material ideas on there.