Thanks in advance.Credit unions can be too conservative and have unique limitations and restrictions. 

I don't ever have a problem filling a vacancy, because it's so unique.

I'm in the medical field, so I just picture all of my neurons forming into the shape of duplexes and dollar signs!

Medical marijuana sales have been legal in the state for a little over a year, but it is still federally illegal.

I was hoping to receive some valuable input on the best financing option available to me since I'm in a pretty unique situation.  

War zones can work in some areas But also have their own unique challenges like theft and overnight drug and party squatters. 

That could be a really unique challenge and interesting way to do a small scale development.As we get further along with the project I'm happy to share with you!

What I would like to do is utilize a tablet or something so that I can craft a unique welcome letter for each specific guest.

Your situation is very unique.

You might get lucky and find a local lender that services their own loans that could make it work but I wouldn't rely on it.However, every locality has unique programs aimed at getting people into houses.