I am currently on the hunt for my first small multifamily property in South Jersey (Camden and Burlington counties) as well.While I have not used a property manager yet, a few local investors suggested Mike Williams of Sureway Property Management.  

Suggest you have it appraised.

The lender I am working with suggested a 5-year ARM with interest only payments.  

I am looking for working capital to expand my flipping business and was wondering if anyone had any suggestions or recommendations on this specific thing.

It would be helpful to know: rent growth, exit cap, business plan and your experience with such assets before offering any suggestions.

Does anyone have any suggestions on neighborhoods for good cash flow?

While you are doing that, do everything @Karen Rittenhouse suggested. 

Thanks for the suggestion!  

Communication should be regular open and easy otherwise as @Nathan G. suggests you need to replace or train your PM to your expectations.

Also if you don’t learn on to estimate cost yourself you will be taken advantage of by most Contractors I would suggest you take the time to learn “I know it’s not the easy way” and that way you will have a understanding of your real cost if you decide to rehab or self or hire a GC.