I am referring to Business Credit Cards because they are liquid, Unsecured, and require minimal Documentation; only a personal guarantee 1) Where can I find the business credit cards that offer Intro 0% APR?

It doesn't hurt anything if she pays, but it starts the process so that any stalling tactics she is using with you will not delay your process. 

Check out Fannie maes delayed financing ;https://www.biggerpockets.com/blogs/5110/42824-all-about-delayed-financing

There are minimal tax implications from doing so, this is something I am fairly well familiar with.

We have a ton of investors utilizing BRRR and Delayed Financing to multiply their SFH portfolios.

You just have to make sure you are talking to the correct agent to structure a high cash value policy so your fees and costs are minimized to the insurance cost so the majority of you annual contribution are going to the cash value part. 

Exchanges seem to have frequent Withdrawal or Deposit delays. 

I figured it is not worth it to go through turnover when you have a tenant(s) who pays every month on the clock w/o delay.

With association dues creeping towards 275 I'd like to minimize the monthly spend for when we do rent it out, to get a much higher cash flow.

The current owner is charging them well below market rent, and I was told that they signed a year "pre-lease" through June of 2019 (so doesn't start until June 2018) with an minimal but insufficient price increase.