I appreciate the insight and information and will post again very soon to layout some situation specific things on my mind that maybe you’ll both have the chance to comment on.

It's not exactly house hacking, since I'm not renting part of the property to anyone else (though we're not opposed to hacking a duplex if we find the right layout and yard).

He has personality traits that annoy me, but nobody gets along perfectly with another person 100% of the time, and overall it works better than anything I've ever done with other people.You need to know your quirks, his quirks, and lay out exactly what is what up front.

You exterior photos and update with new interior photos as you progress.Offer an open house for 1 or 2 hours per week to allow people to see the lay out!

Is there a general layout that I can download or purchase or is this something I need a lawyer to draw up for me?

And in a late market rising interest rate environment debt is what kills the returns on NNN properties.The key to all of these that so many real estate folks forget is that the property itself is really of secondary importance - very counter intuitive to folks who have been focused on the right property and find tenants. 

Yes, I know it's too big for one single guy and a dog, but it was the only layout (new construction* house) that had a downstairs bedroom (for when mom comes to visit from NY), a decent yard for my dog and a place to build my gym. 

I use the Mint app from Intuit.

You can lay out details in operating agreement.

I plan on opening the layout and adding a master bath as well.