If it doesn't cash flow it does not cash flow period. 

Each option has its pros and cons that can impact your investment strategy and overall success.HELOC (Home Equity Line of Credit)Pros:Lower Interest Rates: HELOCs typically offer lower interest rates compared to hard money loans.Flexible Terms: You only pay interest on the amount you draw, providing flexibility in how much you borrow and when.Revolving Credit: As you pay down the principal, the available credit replenishes, allowing you to use it for multiple projects.Longer Repayment Periods: HELOCs often have longer repayment periods, which can make managing payments easier.Cons:Qualification Requirements: HELOCs require good credit and sufficient equity in your primary residence.Secured by Your Home: Your primary residence is collateral, which means a default could risk your home.Variable Interest Rates: HELOCs often have variable rates, which can increase over time.Hard Money LoanPros:Easier Qualification: Hard money lenders focus more on the property’s value and potential rather than your credit score.Speed of Funding: Hard money loans can be approved and funded quickly, which is beneficial in competitive markets.Flexible Use: These loans are designed for real estate investments, making them suitable for purchase and renovation costs.Cons:Higher Interest Rates: Hard money loans typically have higher interest rates and fees compared to HELOCs.Short-Term Loans: They usually come with short repayment terms (often 12-24 months), requiring a quick turnaround on your project.High Fees: Origination fees and other costs can add up, increasing your overall project expenses.For a BRRRR strategy, a HELOC might be the better option if you qualify and have sufficient equity in your primary residence.

Despite them all being deep blue tenant friendly cities, they are also the engines of wealth creation in this country and therefore over a long period (20+ years) are likely to outperform everything else.At the end of the day, you need to come up with an investment thesis you believe in.

But... if it is, I think your best bet to find the type of syndicator you've described is... offline, and over a period of months or years. 

After the one-year period you could rent it out and get another house hack. 

And I've seen people say the later is 6 months, not true because some 6 month periods have more than 180 days.

This means you have an LLC for a single business activity, which is filed correctly, has an Operating Agreement with clear and precise terms, you set up a separate bank account for that LLC and its related business activity, you do not use that bank account in any way for personal activity, and while it varies per state as being a requirement, you always want to make sure you have periodic filings and to take it even further, hold a "meeting" once a year...even if you're the sole member and there's not much changes that took place for the year. 

Not prohibitive like a "lockout period" you may see with commercial or traditional multifamily loans, just a small feeMore info on factors that go into DCSR rates and Prepayments:DSCR Loans: What Are They And How To Get The Best Termshttps://www.biggerpockets.com/...DSCR Loans: How To Use Pro Strategies To Save More And Make Morehttps://www.biggerpockets.com/...

And if veil hasn’t been pierced by now, it likely will be within a short period of time for another reason.

It does help for a smoother transition period, IMO.