I brought it up to a friend this morning, saying I was concerned about what a smaller population could mean for the market.

Stick to the facts and ask clarifying questions to understand their concerns to resolve this.

I have voiced several concerns with no responses.

I think that could be dangerous if people are not careful in their evaluation. 

They can then proceed with a 1031 exchange for their rental properties.I understand their concern about the 180-day timeline.

As far as your concern about WA being a more tenant friendly state, I hear you.

I know many people have done it this way,  but two major parts I am concerned about are 1) how do you handle all the paperwork such as W2's, 1099's business records, etc. without meeting in person?

One of my concerns is that lenders won't lend to potential buyers because it is a modular home.

I'm not sure if I'm making too much of this but my concern is that if I was the one looking for a property in the area:- I would discard the property without looking at it because the competition has higher ratings.- If I still look at it, I would discard it because why take the risk on a bad sofa when I can rent a similar property without such comment.- Once we get more great reviews, the influence of that one will reduce but we have to make sure it doesn't prevent us to get bookings in the first place!

That’s why lending is my biggest concern.