I am acquiring a 40 employee HVAC company with $1.2M in EBITDA and have been looking at Professional Employer Organizations (PEOs) to handle the HR, benefits and payroll. I have found some of these companies to be quite expensive ($100 admin fees per month per employee) as well as set up costs.

I am wondering whether there are PEOs that are tailored for smaller organizations and that are easier on the wallet?
How are people handling the payroll and HR post close? I was thinking about using paychex and leaving HR internal.

Interested in feedback and any recommendations. Thank you.