I have the same REI goal as you (replace  W-2 income using Buy and Hold strategy). 

HELOC for a BRRRR strategy?

There are cheap, effective marketing strategies like @Chris Piper mentioned and there are expensive strategies for people who have the money.

I'd love to meet you all and discuss ideas and strategies. 

Bigger Pockets also published a "Book of tax strategies for savvy real estate investors" (or something like that).

But this something you can do yourself if you wish once you've confirmed your strategy.2.

Someone else might have more details, but here are some starting pointsFind a partner that can front the moneyEquity home loanBorrow against your retirementPrivate money: use the BRRRR strategy.

Because honestly to me it sounds like this is not a good investment strategy for you. 

I am interested in house hacking and would love to hear more about strategies, experiences, general tips, etc.

I own a duplex just south of sloan's lake, and I can literally see the redevelopments moving slowly towards my area (Villa Park).