My partner in the building and I were a very good match on paper. 

Pay off the Mortgage and pay off the Heloc with the Rent ($1000) - Expenses ($245), which with simple interest payments comes out to 4 yrs 6 months to have the house free and clear, plus you pay a micro fraction in interest over the less than 5 years.Then part 2 of his strat for advanced investing he called it, he said the typical lifespan of a rental is 7yrs between light rehabs, since you payed it off before the 7yr mark and it appreciated about 10% conservatively, you sell it, and do a 1031 exchange and roll the 100-120k profit into a house that the 60% down payment is within that last rentals sell profit or buy multiples and run the Heloc strat again. 

I don’t want to read through hundreds of posts to find the answer to a simple topic such as “What kind of security camera system do other investors like?”

@Josue Godoy This is a loaded question- If you are planning on being very specialized in a single area it would make sense to go one way or another...this is an oversimplification, but the point is to be diverse enough that you can process any type of deal...for example, really focus on an area you like well...like flipping, but learn how to hold properties as well, and whatever else you want to learn...as you grow, you'll be receiving many leads from different sources...and the point of this rationale is that you should have enough tools in your toolbelt to put your deals in a "best use" funnel...then profit on the other side.I'm only adopting this position because you are so young and have so much time in the industry to elect to pursue and specialize in one strategy.The simple answer is related to your goals...assuming you want passive income to replace your W2 means that you will need to buy and hold properties...similarly, if you start flipping properties, you're creating another job for yourself and creating a liability.

If he doesn't, I would start to become concerned about why this simple possession case is taking so long (3 months for an eviction case with no clear end in sight is long in NH in my experience, unless the plaintiff messed up something procedurally).

I think you will make more doing it separately but a lot of people opt for keeping it simple and getting co-signers for 3x rent vs income on the entire unit.

This means that potentially, with the right portfolio of rentals, you can make $200k a year flipping a few houses and not pay any tax on it if your rentals are generating enough on-paper losses. 

I would rather have a 10 or 15 year bot with a 30 year amortization with a balance paid at the end of that note.  3 to 5 years always comes too quick.There's something about looking at their advantage on paper works.

Our hope while traveling the country for the next year or so is to connect with other investors  and develop a real estate business/portfolio that supports the simple, yet adventurous, lifestyle that we want to live while also helping others to do the same.  

It is simple to make provisions for a master meter and submeters at the time of construction.