Even at my young age I felt I had the skills to take on such a major rehab.

It will not allow extract of all the sweat equity due to LTV not being 100% (typically 70% refi LTV), but I question with the tax deferred (my plan is deferred forever) versus paying tax on the flip profits, if the extraction of seat equity of a good BRRRR does not exceed the flip extraction of equity after the taxes are paid (this will depend on both how good the BRRRR is and what your tax bracket is).You would seem likely to have the skills and contacts to be able to excel at BRRRR investments. 

@Arturo Fuentes, seems like what you really want is a vacant block of land that could help you show off your skills as an architect?

It became apparent to utilize my skills to design a budget-friendly floor plan, buy a lot, send out the plans for bids, obtain financing, and be my own general contractor from start to finish.

Next, what specific skills do you believe you need to develop to be successful?

Take this deal and figure it out, you will have nothing invested in it other than your time, so it's a perfect opportunity to run into problems and learn how to solve them without a lot of risk.You need three things:-Ability to estimate reasonable ARV-Ability to ballpark a rehab estimate-Basic math skills-A good real estate attorney-Ability to solve problems-Cash buyers1.

If anyone could recommend a workbook or some resource to help me hone my real estate math skills I'd very much appreciate it.

@Gervon Mesidor I completely agree with what @Marc Brenner said.One of the best skills you can learn is how to go direct to seller if you are planning to non-owner occupant BRRRR in the areas you mentioned.

During this pandemic, I have worked with skilled trades that help with rehabs on houses.

However, I really want to learn the skills of deal finding/generation (especially off-market) and negotiating.