Early testing of this new system indicates that it’s a pain to get access to.

While the economics are not as favorable for you, raising $300-$400k to buy something like a 1.2mm property will be far easier than trying to raise $10mm to buy a 100 unit.  

That has worked best for me, but it's always best to test to see what results you get.

In the good ol' days, analyzing STR deals was an IQ test.

However, there’s a catch—I’m looking to partner with an investor to help provide the capital needed to complete the deal (would need to raise around $200,000-500,000).

I don't have personal experience with it, but when the app was first developed, I contacted the developer and put the app through a fairly robust test usage to see if it's something I would want to recommend to my clients (I'm a CPA).I think the app is great for its intended purpose and I do recommend it to my clients now (and have for about 18 months now). 

As raising rents often comes with an increased vacancy exposure risk with renewals, it may not always be the best strategy.

Start by building a solid team, analyzing deals carefully, and making your first purchase to test and refine your strategy.Good luck!

I had a tenant force me to pay for some dumb azz air quality test where she claimed my air was bad and making her sick. 

In other words, your renters have covered a majority of your costs of ownership this year, including covering your debt, and you have to put some additional money in, which raises your cost basis.