IMHO, I think that the first home in your portfolio is going to determine the strength and ability to grow as time goes on.

You don’t need a mentor when they teach you the basics on the internet, experience teaches you the rest.

., "like kind" is really determined by use and intent not type. 

Unless the rest of the tile is solid and that's the only trouble spot, and that would take some technical knowhow to determine (AND is unlikely), the wisest long-term solution is usually to bring the tile up and start again.

@Agyei Axum To determine rents for the rooms I look at the rooms for rent section of Craigslist and zoom into my neighborhood using the Map View of the listings and look at the competition at that moment. 

How can I best determine ARV without similar comps? 

It appears that the income is the most determining factor. 

I was honestly afraid of an answer like this, but I appreciate the validation.I am in quite a fortunate situation where I could theoretically work my fulltime job anywhere in the US that has high-speed internet.

And you need to seriously re-evaluate your method of determining ARV or repair estimates - whichever one seemed off.

There are a lot of moving parts, but it is possible with determination.