All you will do is complicate your life.You are the owner, you are the landlord, sign the lease.

Real estate in any form simply is not that complicated and you would spend less just paying an attorney by the hour to fill in the holes for you or  a really good RE broker.

Yes I have been playing around with QBO and finding it overly complicated and tricky to setup for STR..I will keep playing around with it but will also check out some of these other suggestions:) 

You can do BRRRR deals without getting into any of these rehab complications. 

No reason to complicate it.

This is a very complicated situation and you will need to consult a commercial mortgage broker (Like myself) Commercial properties have completely different loan terms than residential and are rarely 30 years fixed like your accustom to.

In most cases, neither is warranted.Warning: I am not an attorney, and this can be a complicated topic.

The tenant is an older veteran who is mild mannered and appears to have a lot of health complications.

A C-10 Electrical contractor can explain how to split the units, you may have to sub meter yourself.splitting a single unit in 2 is generally more complicated than building a common wall. 

That’s a complicated set of questions but it insures you get past every reason it would be taxable.