@Natalie Kolodij is right in saying that a lot of the answers to these questions will be specific to your own tolerance for risk, investment opportunities, and goals for your real estate empire!

It "looks" acceptable, maybe C class, via google streetview, and the crime stats are acceptable to my risk tolerance. 

Is there a rate of increase that people have found to be tolerable with their tenants?

There are numerous part time agents in this area doing in excess of $3 million annual volume.I know this comes down to my own goals and risk tolerance, but do any of you have an opinion or advice when deciding who to go with?

There are some complex structures to mitigate that for sure where the owner might hold assets in a blind trust with no control but you are a one man show and that won't ever pass the smell test to a judge.Asset protection is all about risk tolerance.

Boils down to your exit strategy, risk tolerance, etc. 

I've had a great house in Seattle for me and my family for a good while now.Just to clarify what I mean when I say risk, I'm talking about total financial risk (which is why I'm limiting exposure to a tolerable $50-80K in cash outlay and will be looking closely at liability issues) and the risk of biting off way more than I can chew from a time, logistics, and experience standpoint.

It also depends on your tolerance to risk and your interpersonal skills.

It all depends on your specific goals and risk / pain tolerance at this point of your life. 

@Kevin TuttleNewbie here.... with a whopping 0 properties but when I think about this, and what other posters alluded to, is: depends on your risk tolerance.