Using a smaller bank or credit union is the way to go.Being that you have been in business for 10 years I am VERY surprised your business banker can't help you!

They are asking for 28% capital call proportional to investment amount. primary purpose of capital call to survive high interest rates for next 1 year and hoping interest rates gets favorable by then.

I know I could put furniture on 0% interest credit cards, but I would need 2+ years to pay it off and I don't want to have to jump through hoops to cycle a balance onto new cards. 

While imo this is unfair, extreme and just plain incorrect; the detractors do rightly point out that (1) the seller remains liable for a mortgage note secured by a property they no longer own and (2) as long as the note remains outstanding the seller’s credit capacity will be impacted negatively, often resulting in the inability to obtain a mortgage for a home purchase.  

I have learned to be in favor of finding the best market to invest in. 

I was going to add, as posted above, it's a great rate and stick with that local credit union for the future business. 

I prefer to have the least amount of banks as possible.Create a bank account that you already have a relationship with(Credit card or mortgage)The least amount of bank accounts is also ideal.

Don’t do any favors, this is your business, so treat it like a business. 

Texas tends to favor landlords in these cases, but follow the legal process exactly—any misstep could delay things.As for protecting against retaliation or property damage, installing security cameras (if you haven’t already) to monitor common areas might be worth it.

But at a $1.5M asking price, as long as you don't have to spend more than $300k in rehab (without raising rents), this is a slam dunk deal that should easily be financed  at 75% LTV by a "investment real estate-friendly" bank/credit union that is located fairly close to the properties.