Are there circumstances where some investors might choose to use separate bank accounts and credit cards for each Series? 

I'll use an example with similar numbers because I want to truly understand the reasoning here:On the high end, the interest rate would sit around 5.75%, at the cost of -.125 points (ultimately resulting in a lender credit of $164) and a P&I of $766 per month ... on the low end, the interest rate would be 5.375% at the cost of 1 point (around $1300) with P&I of $735 per month.Given that info, this is to say that if I planned on holding onto this property more than 42 months (that's $766-$735= $31 per month... then $1300/$31=41.94 months), then it would make financial sense to pay down the percentage rate up front at 1 point because beyond 42 months, I'd be saving money every month...

Also, in step 3, is it possible to us a home equity line of credit?

As to your next / first steps....If you haven't already, I would recommend that you start talking to lenders (banks, mortgage brokers, credit unions, etc.)

I really would like to hit 75% does anyone have any small local credit unions in the area that they like doing business with?

@Mike McCarthy, I see that cozy requires a 2.75% fee when tenants pay with either a credit or debit card.

I had an Audible credit and it was between that Josh's book on Rental Property Investing or Shark Tank (how different would my life be if I downloaded Shark Tank instead?).   

We have racked up about 45k in credit card debt.

Hi Adam,Just a couple comments and I'll leave the rest to others.In a downturn like 2008, I think it was more common for secured lines of credit to be frozen, not called. 

giving credit my go into a bad road depending on the type of people your tenants are as they might expect it again down the road. if they are great tenants, never bother for the small stuff and you want to keep them, I would give them a small reduction on rent to help them off set the electricity bill.