Normally a PM should get paid more.So the result is you get mostly PM's who struggle to survive and will pick up any business they can.

Here are a few I recommend: "Rich Dad, Poor Dad" by Roberto Kiyosaki; "Set for Life" by Scott Trench; "The Unofficial Guide to Real Estate Investing" by Spencer; "The BiggerPockets Ultimate Beginners Guide" found here on BP; "The Book on Rental Property Investing" by Brandon Tuner.

Ultimately the price is going to be whatever someone's willing to do it for.

Everyone here has provided some great advice and ultimately it's what would help you sleep at night.

Start with BiggerPockets Ultimate Beginners Guide (free).

My ultimate goal is to have $10k net cash per month from my long term rentals.

Start with BiggerPockets Ultimate Beginners Guide (free).

Ultimately it is a judge who decides what a reasonable charge is. 

When the first spouse dies, the surviving spouse enjoys a step up in basis to both ownership portions of the property.

We're great at finding deceased owners, and working with the Heirs to name a Personal Rep, and ultimately buying their property.