I've got great credit and a healthy amount of capital compared the loan amount.

A few tips: maintain a solid credit score, organize your financials (especially your proof of funds), and be ready to show that you have a solid plan for your investments.

Under the Fair Housing Amendments Act of 1988, ESA's are a subset of service animal for the purposes of residential real estate.

You should have a fairly good success rate.

I have a priority credit line on my brokerage account that is now > 1% lower interest rate than my mortgage.

So, the real estate broker/agent would have to inform the seller of the fair market value of their home, making it much more difficult to earn a profit larger than what a real estate commission would be.  

.* Our agents met and we learned that the lowest they'd go was $510 because of a HELOC* We offered $520K with $10K seller credit to be used for closing costs.

If they are VERY professional, they will have their processes in writing as verification that policies are enforced equally and fairly by their entire staff.6.

For example, they lost a fairly major battle when they tried to argue that only licensed professional can manage short term rental properties. 

No eviction protection so since you gave to settle on someone with and low 600s credit score if you have to go to court they get to charge for their time on that.