Would get with a local engineer to do the layout and an estimate on costs.Your buildable sqft seems really low. 

It can vary widely based on just the local area.

The local magistrate will typically hear cases involving local/municipal citations. 2.

If you find one that piques your interest, connect with local investors and professionals in the area to gain further insight into the market.The Midwest markets have been gaining a lot of traction because of their affordability.

Right now, you might be able to get to a full 10%, but going forward, you'll be limited to 5% plus local CPI.For this reason, I wouldn't create a document showing future rent increases.

If that is your goal, I recommend you start attending local real estate meetups so you can meet local investors in your area doing what you want to do and collaborate with them. 

Looking for people in LA doing local meetups with the same goals.

Ask a local trailer seller but I bet they’d say you’d be lucky to sell them for $10k retail.

My local bank quoted 75/80% LTV for 20y at upper 8%  Other options and terms? 

@Annwar Zahriehcan you house hack locally?