House hacking lets you live in one unit and rent out the others, which can help cover your mortgage and generate some extra income.

I think the HELOC is the way to go if you can - However after reading your post, if you are talking about a 6 figure pay day, how long would the property take to generate that 6 figures in cash flow?

The ability to generate more income for simply the cost of a building is another huge cost saving over buying an expensive commercial lot and developing it.

but without the whole "broadcasting" thing that you mention, I don't think I would have generated the outreach to the people of my age today who ask me for guidance on their first investment.

We are literally next to a golf course and about 10 mins from a ski place and I don't think fancier amenities would generate a ton of ROI. 

Here are a couple of developers you should take a look at Trion Properties, their principal Max Sharkansky posts here on BP, https://www.biggerpockets.com/blog/top-5-markets-multifamily-rentals-2019and Feldman Equities out of Tampa (3rd generation real estate family famous for having built the terminals at Chicago O'Hare) who are among the only ones opening up downtown skyrise office buildings to accredited investors.

What this implies to the typical RE investor is obtaining significant cash flow is a big challenge right now and relying on other RE profit sources (such as a value add and not doing a value subtract) may be a more certain path of generating returns.  

I've started flipping houses in the HRM (currently flipping a house in Fairview that was purchased off market) and plan to focus on flipping to generate cash flow for the next while. 

I had capital and employment and properties from the start.

I was employed with and carry insurance with a premier global property and casualty insurer.