Make sure your address falls under that range. 

But I knew and had worked with a couple of hard money lenders often enough as well to know that they’d fund any purchase in the range I was looking to buy in without issue if my private lenders didn’t have the capital or weren’t interested.So to answer your question I already had several lenders in place that I had worked with previously. 

Another you could have done was to call a few other PM's in the area and get their take on the rent range.

Sometimes, it is wiser to sell even at a loss rather than become further entangled in a tough investment.The rise in alternative investment strategies has created a range of possibilities that can be tempting for new investors.

Plenty of houses in the 400k range that sit over 80DOM because low buyer demand, low buyer ability.

Either way, there are a wide range of tax consequences associated with big withdrawals from any of these accounts that can't be ignored.What is Your Current Plan? 

However, I’m trying to educate myself now before moving there so I can make a well-informed investment.Based on my spreadsheet, most properties in the $300K–$350K range with an estimated rental income of ~$2,500 per month show a negative cash flow.

So, what is happening today is not as important as what will happen in the foreseeable future.If rents are increasing faster than inflation (I use 5% per year as an average rate), then it may be worth holding the property, since your cash flow will increase as rents rise.However, in your post you stated, "Mortgage rates have kept increasing as well, that's why I put a range on negative cash flow."

I suggest keeping track of these key features which range from cap rate to, cash flow, ROI, and asset comparison.

As you mentioned, that expense range is not super helpful.