Do you have a line of credit or one you can get set up? 

So by putting everything down on paper, you can easily correct the client and keep things moving.You mentioned timelines....those are hard to get everyone to agree on in the original contract because a Contractor knows that a customer nowadays will start changing things as soon as they watch that episode of HG TV with their glass of wine.I included on my Change Orders a line to add time to the project in addition to the added dollar amount.

I can't see how that could possibly be a better estimate than just fitting a line using all the features and several hundred properties.Then again, Steven's tool sounds highly accurate, so there must be something to this technique.

My plan at the moment is to look for single family residences in or near my home city (Mobile, AL) in the price range of 50k - 75k to BRRRR.

Hi Jake - I'd actually recommend using your $200K cash and/or using a line of credit from a bank.

I was looking at a securing a line of credit.

You need to do a line item business analysis. 

Said simpler, it's a fancy savings account with a line of credit bolted on it. 

In addition to peace of mind, it's a great tool to use when sending resolutions of unacceptable conditions where you can either get a price discount or a line repair from the seller if the sewer scope shows problems with the line. 

Take a look at some trade accounts and a line at the Big Blue and Big Orange if you are going to self manage.