I’m glad to hear you’re enjoying the site so far.At this stage, the biggest thing to focus on is your strategy and how much time you can commit.

(for the building) What's the site and site work cost? 

https://www.biggerpockets.com/blog/multifamily-dscr-loans

I just don't have a big market, so it's tough to find something like this particular property as evidence.I was thinking of something more general, like a formal study of various markets, but I haven't found anything except general articles or blogs.

Take a look at BP's blog where new articles are published every day: https://www.biggerpockets.com/blog4.

Again, the BiggerPockets store has some books on this topic, or you can learn about it by watching podcasts, reading blogs, and interacting on the forum.

I suggest reading this BP article on the core 4.https://www.biggerpockets.com/blog/core-four-real-estate-team

I also recommend reading blogs and forums or watching videos on how to develop a good roommate contract, house rules, etc.

Again, the BiggerPockets store has some books on this topic, or you can learn about it by watching podcasts, reading blogs, and interacting on the forum.

Here are a few suggestions on how you can maximize the wealth of information available: Check out the blogs and podcasts, or take advantage of the search feature (magnifying glass).