Just interview a few and go with the best you find.

If it doesn't work out with that property manager, interview some others and find a decent one that may charge you less or just give you cursory information for a cursory fee but at least you can say you were able to learn what they do, compare it to your online property management tool and grow from the experience. 

Also, do you interview them in a way before you accept that they are the one that can help?  

A flip can take three to four months when you're doing a cosmetic flip (new kitchen, new floors, new roof...etc).As for finding a competent contractor you simply have to interview them and see who actually takes notes, is reliable, gives suggestions, makes suggestions on how to find much more cost-effective finishes and does not over-charge then they're a good contractor but that contractor already has a ton of business.

You might interview another experienced Realtor and get their opinion of price and whether staging is necessary in your area.

Interview a few and make sure your agent is investor friendly so they know the opportunities and challenges in the market.

There are a bunch of posts and articles out there with interview questions you can ask before hiring your pm.

Sounds like you have a solid list of information to gather and yes, you can definitely interview the property manager.

Interviewed a number of RE agents in several cities, and found one in Ft Wayne, IN who was hungry and willing to put in some effort.

Interviewed a number of RE agents in several cities, and found one in Ft Wayne, IN who was hungry and willing to put in some effort.