I don't have a lender yet but just read the "refinance" section of David Greene's book "Buy, Rehab, Rent, Refinance, Repeat" and he suggests getting the lending secured on the front end so that you know what to expect when purchasing as they can make a huge impact on the BRRRR strategy working or not. 

Most sellers would be hesitant to go under contract without knowing in advance how the deal will be purchased and if you already have the money (or loan) secured.

This is done as a way of qualifying the home as security for the loan.

I am trying to work with a turnkey company to secure my first property, but am having trouble getting pre-approved due to my unique circumstances.

I would like to find tenants that are "professionals" with full time jobs that aren't minimum wage (nothing against these people just want more security).

I will be seeking the deals, securing the financing, managing the projects and managing the properties.

As far as the credit card goes, I recommend looking into a "Secured Credit Card".

Was the security deposit handled correctly at closing?

I'm guessing that you are required to use a licensed roofing contractor anyway.....and you want to so you can secure the warranty on the materials.......

Should have kept his security deposit.