I'd estimate that I currently have about $300k in equity on my home, and am seriously considering borrowing some of it to invest in real estate, however I have no idea what the best options would be (syndicating, rentals, flips, lending, etc).

(You say it’s worth about $100k more than you’re paying so figure an extra $15k.)Maybe you’d be better off partnering with the parents unless they have zero interest?

Between the extra AirBnB fees, special assessments, silly parking they have going on, it doesn't look good for me in the PCB area. 

Research financing options like portfolio loans or working with international-friendly banks.

.- Are there any other endorsements / options that can be added to a standard policy which act as a substitution or supplemental for an EQ policy?

I would be happy to help you explore first-time buyer programs and financing options to make your purchase smoother and set you up for your future rental plans.

This will open up your options a lot more. 

Most of the population is relying on card or electronic payment options.

@Ben Corby Your option 3 is not an option, if an attorney told you that, they obviously were not a tax sale/real estate attorney. 

Keep those parameters in mind as well.Lastly, A great HML would have options for you to transition into after your loan term ends with them.Best of luck to you on your journey!!!