Their crew wil come out and finish the edges on site, drill sink holes, etc....

I'd say your best strategy would be for a furnished rental either listing on Furnished Finder, Airbnb 30+ day stays, VRBO, or some of the other listing sites. 

Welcome to the site @Xu Chen!

I got one done at 65% LTV cashout and it was on a free and clear owned asset worth 900k that had 12 month trailing history on STR sites for 500k in rent, yes 40k+ per month. 

Those 4 tend to be the most popular sites for mid term rental listings.

I have not used one of those sites.  

I've built one for a theatre before, if you're handy I got most of plans from this site.

The link is on my site under the services section just go to sean sells denver dot com.

Homes that are "modular" are partly constructed in a factory and then assembled on the building site, otherwise they are just like any stick-built home with the same code requirements.A lot of people have made millions with manufactured homes.

I suspect you get a lower deduction than if you have someone on site but to me it was close enough.