Estimating ~$90,000 project cost. 

I can estimate most of the cost, taxes, insurance, utilities, PM fees, and such and I know that should be provided in the expenses but when it comes to the actual maintenance of the property, what strategy do you normally use?

So, I'm estimating your monthly ROI will be very low, 2-5%.

The best thing to do is contact the county tax assessor explain the estimated purchase price and ask how this will impact the annual property taxes.

This approach avoids any specific mention of what you found and keeps the denial grounded in general terms, which helps minimize the chance of confrontation or claims of discrimination.3.

Full time job = $4550 monthly; Part time job = ~$2400-$3200 monthlyLittle Rock, ARZillow estimated my property at $358,000. 

Talk to a reliable lender to find out if you are lendable now and for how much and if not, what you need to do to increase your chances and timeline.3.

You can type in the properties address and it pulls data from airbnb and other short term site to give you from what I've read a pretty accurate estimation of Occupancy rates and income.

I’ve been researching North and Northwest suburbs to invest but haven’t had a chance to research lenders.  

There's a chance they will say no (because they showed you 6 properties and expect to be paid) in which case perhaps you can arrange for their managing broker to set you up with a different agent in the same brokerage and give the first agent a referral fee for their efforts/ for referring you.