If one or more units are vacant, the remaining units often don’t provide enough cash flow to cover expenses, making it harder to meet operating costs.Maintenance costs: A fourplex comes with four times the appliances, plumbing, HVAC systems, and other components to maintain, leading to significantly higher repair and maintenance expenses than single-family homes.If you want to see the detailed calculation, read this BP blog - More Units Doesn’t Mean More Money—Why a Single-Family Home Can Beat a Fourplex.Resale value: Multi-family properties have a limited buyer pool—mainly investors—who base their offers on CAP rates.

So there will be the cost of the inspections (not cheap) and the cost of the repairs.  

I need something simple that I could utilize today.Thanks you will not be able to get something today. in order to pull credit typically you must have a background check done on you and the company will also come visit your office and confirm you have specific security policies and procedures in place. 

Prioritizing cash flow, mastering property management, and learning basic repairs can make a big difference.

My gross income is a bit less than $7k (and I'm renting near top of market rates) with minimal repairs ($2k/y), but...1.

Will they have trouble making the payments to you while also having enough money to keep up with the maintenance and repairs/ tenant issues/ all the expenses involved with owning the property?

Have you assessed how some of the repairs will be funded? 

A turnkey property is already renovated and ready to rent, so you don’t have to worry about repairs and can start earning right away.

,Buying, renovating, and selling is a great strategy, but here are a few things to consider:Start with the Numbers: Make sure you know your ARV (After Repair Value) and work backward to calculate your budget, including purchase, renovation, holding, and selling costs.Financing Blindspots: Even if you’re buying in cash, plan for potential delays or overruns in renovation costs.

Last, you can do an unlimited amount of repairs to a home using a 203k renovation loan (up to the FHA loan limit), including knocking down the house and building a new home!