As others have mentioned, theming is very important.

I like how you point out the "technical" elements at play by mentioning the demand for MBS versus treasuries. 

Last thing I almost forgot to mentioned that lenders can lend you between 75-90% of your loan to value.

For good areas to invest, check out Seminole Heights, University Area, Town 'N Country, and East Tampa, to mention a few.

I would not approach it from the standpoint of I want to build container homes and then look for a site, I would have a site and think about what the best use of it would be and if it happened to be container homes then go for it.As John mentioned above appealing to the masses is the route to success here IMHO

I still have a little more than three weeks left Yes, and the DIY sites are mentioned in the blog post I previously linked.

You mentioned that you live in Cali and the house you are looking at has a basement...

 (  I somehow doubt that the above is a topic that the “gurus” selling their programs mention) .  

He mentions that it requires the mortgage to be on the LLC name.

@Matthew Banks yes to all you mentioned!