The only method that really comes to mind is BRRRR, which I am not opposed to, but would prefer something a little simpler for a first time deal.Similarly, I'm making an assumption that it might be possible to use a combination of HELOC and DSCR loans on something a bit more turnkey for the initial purchase and then refi into conventional after a year or two rental income?

I think the thing that is being missed here is the Profit First method of allocating revenue to different “buckets” there are banks that do this automatically for you, whereas, with a traditional bank you would manually have to do this.

Thanks @Michael GermanoJust off Pace's promotion of another Gator method, not currently a member.One thing I'm concerned about is that I already have a line of credit, he mentioned it needs to be and LOC done through his suggested companies.

What methods work for you?

Both the revenue estimate sites and my own enemy method calendar and ADR research shows this to be the case. 

Enduring this arrangement for just a year or two can position you favorably to replicate the process and gradually build a substantial portfolio of properties just from the HH method alone.

However, the method of handling the 1099 income on the tax return may vary depending on the circumstances and interpretation of tax laws.The approach your CPA has taken, where each property is reported separately on Schedule E and then adjusted on a statement for property 3 to match the total 1099 income, could be viewed as a cautious approach to ensure compliance with IRS reporting requirements.

Or is there some other method that works better.

These “mentors” suggest methods that are DANGEROUS in the hands of the inexperienced, unknowledgeable, and under capitalized.  

Using a phone or table for everything is not always the most efficient method.