Advantages of paying of primary home mortgage#1 Ability to borrow on your home in the future increases as your principal decreases#2 One step closer to financial freedomDisadvantages of paying off primary home mortgage#1 Loss of tax savings from mortgage interest.  

Wrt profitable exit, if i put down say $20k and after 10 years or so walk away with the ability to get a much larger sum due to mortgage paydown, even in the absence of appreciation, this seems like a good deal to me.

No hard wire, interconnection, monoxide detection ability, or combination smoke/monoxide ability necessary. 

These elements sent me back to the workplace where I know I don't have any business being, like where I am now.

Starting with the smaller unit mix is great because of the ability to finance them as residential purchases.

I've begun my direct marketing which has already produced a few promising leads and have been analyzing three properties a night to improve my ability to find a great deal.

Over diversifying is generally done by lazy investors who do not have conviction in their investment strategy or are confident in their ability to execute.I worked in investment management (non-real estate) for over 13 years.  

With your ability to put some sweat equity into your properties you are open to a few more opportunities.  

And plan on having the ability to obtain Post Construction Bonding for a variety of issues.I applaud and admire your competitive spirit!

If you are very confident in the Turnkey company's ability to manage save the 8-11K by purchasing on your own and bring them (or another group you feel comfortable about) to PM the unit.