I would like to purchase a structured course and have narrowed down my options to Seth William's REtipster masterclass, Joe McCall's simple land flips course, and Jack Bosch's Land Profit Generator.

Points and loan details are TBD still as we're just getting the tentative process down on paper as we wade into the details. 

2 partners and I are looking to purchase a small, 13-unit office building in a bustling local town in northern NJ.My question is simple - Am I foolish for buying office space right now?

There's honestly good, general advice above, but the answer to your question is really simple. 

Yet, many investors overlook simple strategies that can significantly reduce their tax liability.

One CPA got rude on more than 1 occasion, for us merely asking a simple question.  

The amount of equity I call pull is less than the cash I have but not significantly less.When doing this analysis it struck me that it may not be worth using a HELOC for the simple fact that the interest rate is ~9%* while the funds in my high yield account are only yielding ~5%*.

Be where their eyes are searching, but it's not as simple as asking here. 

Personal criteria, building criteria and area criteria will all affect the way a deal appears on paper. two 100 unit apartment complexes, one in an A area and one in a C+ area will have very different financial breakdowns and interest groups.Want to know if a deal is good (for you)?

The 15% return is in paper and not sustainable.