This is for personal clarification. 

We have pretty much accepted the fact that ANY person's opinion can be wrong.

House hacking is the BEST way to get into real estate investing and that's how I personally got started as well too.

Rental properties are owned by landlords.

Lenders typically require a resume for the GC involved in the borrower's project to assess their qualifications.When it comes to a GC getting funding for their own projects, while some lenders will take your experience as a GC or builder into consideration, most primarily look at your track record as a borrower on title when determining approval and pricing.That said, if a lender deems your experience sufficient, they may allow you to act as the primary GC on your own project instead of requiring you to hire a more experienced GC. 

The answer is its personal preference.

There are multiple potential strategies it's just really going to depend on your personal situation. 

Depending on person it's in the teens.

However, if your business owns real estate, that portion of the sale may qualify for a 1031 exchange, allowing you to defer capital gains taxes by reinvesting in another like-kind property.

I email all my documents as pdfs with password protection, then I text the passwords to the person receiving them.