Then I found out he was co-host of the BP Podcast, which is very popular and useful...so essentially, if you can plug into that guy's meetups and follow his content here, you'll immediately be closest to one of the most enthusiastic, inspiring BP sources of info!

The key isn't to look for one of each, the key is to look for sources for each.

If you can get a bank loan, then that would be your cheapest money source. 

I don't mean to be critical about this but it doesn't seem like you've done any homework or research on where to start.

Since I do this full time and it's my main source of Capital to support my Family (Wife & 2 Kids).

As the others here mentioned before, it's critical to check with the local planning commission and city/county governing bodies.  

These are the tough critical questions that you need to know the answers to BEFORE you even go under contract for that first property.If your loan officer and realtor aren't working through that same thought process with you, then you're working with the wrong people.

You can bring in cash from any source. 

Less cost to enter the market, less demanding tenants (if you screen them correctly), and more opportunity for value add which is critical to generating solid cash flow. 

We have a variety of sources for 30 year money.