Take it with a  grain of salt as most are usually approximations based on algorithms which use many variables

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?

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.

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

Your own estimates.

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

They handle:Monthly Payment ProcessingEscrow for Taxes and Insurance: They ensure property taxes and insurance are paid, which is essential to protect your interest in the property.Record Keeping: They also maintain records, which can be invaluable if any issues arise during the term of the loan.ConclusionGiven the details of your property and the $200,000 sales price, a possible scenario could look like this:Down Payment: 10% ($20,000)Loan Amount: $180,000Interest Rate: 8%Amortization: 30 yearsMonthly Payment: Approximately $1,320 (principal and interest)Balloon Payment: Due in 5 or 7 years (this allows for refinancing or payoff while giving you some flexibility).These terms are flexible and can be adjusted based on the buyer’s credit, down payment size, and negotiation.

Currently I have the capacity to take on properties that have an ARV of 180K approximately.

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.

So the increase in revenue probably ends up being 5-6%.Maybe I am over estimating the cost though.