If the goal is to become a full-time flipper/contractor, then doing tighter jobs can help build momentum for a business, that will pay dividends well beyond just the specific house, itself.  

@Robert BriggsSince a cash-out refi and HELOC aren’t viable options in Texas, and personal loans have high interest rates, consider a few alternatives.

It's running a business NOT renting a house.  

I’m looking to start a discussion on the best systems and tools brokers are using to efficiently run their business.

Incredibly poor business deal. 

I left my job 2 years ago to help me and sister build a online business.

I can't say when that will be but 4.125 is quite a lot depending on the rate you get.I personally want a hassle free funding experience and the lower rate.

Quote from @Blake McWilliams: Using and running a CRM is what you need to help the business you have in real estate grow.

It would just need to be a situation where they have great contact with the person doing that managing of the project (I.e. have known the person for years, great reputation, person has experience in flipping etc.).

(Either with the roofing company, a heloc, or a personal loan.)Either way you will probably be way ahead on interest saved unless you have a sub 6% interest rate.