While I am guessing you will be taking some or all of this equity to your next home, if you try to leave it deferred via renting then1031, then the capital will never really be available to you unless you pay some tax.The sec121 exclusion of 500k is considered the best tax break. 

Great thing about a 1031 exchange is you can put a higher down payment or all of the funds into the new property and take cash out as early as 6 months with DSCR on a cash out refinance.

Every lead investor can call upon any (or all) of several mentors as often as is necessary throughout the process of locating a property, making an offer on it, inspecting it, evaluating its financials and prospects, and rehabbing it, if necessary. 

Were you thinking individual liens or all on one lien?

Overall owning a home is better than renting if there is positive appreciation and you can rent part of it out to cover some or all of the mortgage. 

using a HELOC for part, or all, of the costs of a BRRRR increases both ( 1 ) the cost, and ( 2 ) the risk.  

If not two of three, or all of the three.

You could offer them cross collateralization in one of or all your current properties.

Or all qualified tenants pay their rent?

You get some or all of your mortgage offset by your tenants while paying a small tuition to HHU (House Hacking University).