In fact, my internal team manages our website and SEO fully as it is a very crucial piece to visibility.

This is perfect being 2 doors down from where we live so we do not have to pay cleaners and property management.

That does seem to help but most self-managers just use the 2 OTA without a PMS. 

You will hire 2-3 of the wrong contractors also and lose 10-15k in walkway money.Your first try should be to do a flip as a smaller partner with someone else, a friend, a local investor from a meetup, so you can learn the ropes, know how to manage a crew, etc.

We've been managing our properties for 2 years now and been doing a lot of the work ourselves to save money, such as yard maintenance, cleaning, unit flips, etc.

What is the value add to the builder for his time, management, experience, subs, etc.?  

We use Guesty to manage 40 units and it's the best we've found.

The property is being sold as-is / cash only by the management/Hoa of the development.

Does anyone have a recommendation for a good property manager in Wilkes Barre, PA?

In my nearly 20 years of representing landlords and property management companies, I have advised against allowing tenants to perform services for the landlord in exchange for rent reduction.