Management companies need a thorough understanding of the landlord tenant code where the property is located. 

Do you have a pretty thorough understanding of construction in general, and all of the relevant sub systems- electrical, plumbing, and HVAC?

Additionally, you should also consider conducting thorough due diligence on the property to ensure that it is a good investment and that there are no hidden issues or liabilities.Overall, it's important to approach any real estate transaction with caution and do your research before making any commitments. 

@Lee Hollatz I used RC Fields, and they are extremely thorough and detailed.

If this is your first deal be as thorough as you can be, and don't be afraid to ask a lot of people during your DD period because this first deal could set you back years if it goes poorly. 

Make sure you do a very thorough inspection as major repairs typically make the deal start in the red. 

The Complete Guide to Real Estate Wholesaling" by Steve Cook - While this book is not specific to multifamily wholesaling, it provides a thorough introduction to the practice of wholesaling in general, including strategies for finding and negotiating deals.

I like to be thorough and make sure I have fully analyzed a deal before moving forward.

The street is also a thorough way for pedestrians and other cars that want to avoid ~5-10 blocks of traffic.

Research the property: Before you bid on any property, do your due diligence and research the property thoroughly.