Is it likely or unlikely if I play this right with the rental property, the rent will for that houses mortgage and my HELOC so essentially I am at the point I started with having only one loan (my mortgage). 

You are essentially just treating the LLC as a property manager.

That said, there are closing costs associated with mortgages so it rarely makes sense to me to pay them down early as that essentially increases your APR, especially if you are going to turn around and get new mortgages on new properties.It makes more sense to me to either scale faster or buy the “next one”with cash.  

The business of note investing essentially boils down to three things: finding notes (deal flow), finding money (sometimes partners or other investors), and managing your notes and your money.

The GP is essentially gifted 20% of the deal for their efforts and is in the cash flow day 1.

It ends up at a tax sale where I pick them up for $1 per lot, plus $49 to register them.I had wanted to build some domes on them, but the city created an ordinance that essentially keeps me from building them.

A brokers license allows you to run a brokerage business, including being a sole practitioner.For what you want to do, getting your license is not essential.   

Thus after 2 years I've essentially got ALL my money back via tax savings.

The best example is TD Bank (Toronto Dominion), it will lend to Canadian citizens to buy property in the US.Having good people is essential, whether, the property is down the street or across the globe.  

If you cannot get at least $2000 a unit per month it wouldn't be worth doing because you are essentially paying $2M to build a 6 unit that is valued at $2m..I would only build if I am gaining equity.