Open a separate checking account, get a debit card for it, put a chunk of money in for reserves and do all transactions from there.

So I increased the limits on my credit cards.

Once your paycheck is deposited put 25% directly into your savings or an account that DOES NOT have a debit card.

HELOC- This is like a credit card and the borrower can obtain a certain amount of money during the lifetime of the loan.

I recently learned about this really cool app that allows anyone, with a public library card, to download/checkout audio books, including real estate books.

Pays for the PITI of a 3.5% down FHA loan in a A-class area1 SFH rental that performs well1 SFH converted rental that isn't the greatestI can fund the $15k rehab with a 0% interest Credit Card that I can payoff easily before the 15 month term

Just keep all your other debts in check (credits cards, cars etc.) at it will go back up quickly. 

Without the credit cards debt, my credit scores is always in the high 700's.

It syncs to the bank account or credit card, etc. 

They told me that I would have to manually enter every single charge I do on the credit card for the business manually.