One plumber said there was "additional" work required that was not covered which was a joke. 

I would love to connect with reputable REI friendly Property Managers, Real Estate Brokers, Contractors etc., in Pennsylvania.  

Already, it sounds like hours, and you're not close to being done yet.  10% of the monthly rent is WAY less valuable to me then the amount of time I am saving not having to review applications, show the house, call the plumber, etc.  

So most newbies quickly turn to trying to flip houses off the MLS and not only don't they make any money but they ruin their reputation with every investor in town before they even get started.

I've been self-managing since I purchased, but would like to find a reputable and recommended property management company to take over.

You can outsource marketing (any agent will list it), accounting (any CPA) but without relationship with Tenants you'll have constant problems.Such companies exist - they take phone calls 24/7 and then transfer them to PM to coordinate contractors.If you don't care about your bottom line, you can hire such a company: they will call to the most expensive plumber co, electric co, etc - you pay the money, they fix the problem.Fixing toilet would take you 10 min plus driving, they will call the plumbing company which takes $200 just to diagnose the issue (im not kidding - I've had such thing).

You could shop around on that quote you got but only to reputable companies.

If they provide reputable properties for a good price, and they cash flow, I don't see a reason why you can't make the purchase from overseas.

This includes gaining an idea of possible Title Companies, reputable attorneys, and potential buyers.

Depending on the relationship you have with your tenants, you may get threats, etc. but they don't have any standing against you.Aside from renovating the kitchen:I would definitely have the HVAC checked and serviced by a reputable company in your area.