I bought one of the Bill Noll education packages from my local REIA event this year and it came with a free 3 year tax return review.  

Hiring of a PM is one that you really should conduct your due diligence; how many homes do they manage, how long have they been in business, is PM just a side gig because they really do sales, how many homes do they manage, how do they handle maintenance, look at their reviews, the list goes on and on....Good luck with your investment

Make sure in your offers you have contingencies on reviewing the leases and rent roll!!!  

Do a search on BP and you will come up with 100s of threads to review. 

Review the mortgage and note documents carefully first.  

Do you have an attorney review the contract?  

To review: You will spend $150-$450 for each LLC you register, plus $600-$1000 per year.

One side returned it, the other side asked for more time to review it. 

I strongly suggest you review your estimated value.

I especially ask if I see that they've worked at a different institution by reviewing their Linked In profile.