Remodeled the upstairs effectively adding two bedrooms and one bathroom What was the outcome?

She does not sound like someone you want to keep long term. 

This sounds like a good plan - sticking to the duplex or SFH for students is good too since most DSCR Lenders generally stay away from "student housing" but if you are looking to purchase a rental property that can easily be utilized to rent to any tenant (adult, family etc) including students, you should be OK

There are a very select few who will allow use of the entire lease or a percentage of the difference if the leases have been in effect and you can show payments received for at least 3 months...  

Are there any specific marketing channels or tactics that property management companies often overlook but can be highly effective in lead generation?

It sounds like you both have educated yourselves properly, which is great hear!  

I k ow that anything that sounds tempting has a catch in it, so I was wondering if there's anyone here who has experience with renting his / her properties to traveling nurses, that can share the experience or just the bottom line - if it's worth it or not ?

Given the complex nature of investments and personal finance, I want to make sure I'm making informed decisions right from the start.From what I understand, a fiduciary financial advisor is someone legally obligated to put my interests ahead of their own, which sounds reassuring.

Sounds like a pretty typical experience one can expect when working with this type of asset.

What effects will Tesla being there have on real estate?